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GX240, 270, 340, & 390 RACE PARTS
(Page takes a
while to load / Peut prendre du temps à ouvrir)
(Most parts fit both both Hondas
and clones / La pluspart des pièces vont sur Honda & clones) |
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AIR FILTERS AND KITS
BOLT, STUDS, & HARDWARE
BEARINGS AND CRANKS
CAMSHAFTS
CAMSHAFTS - CUSTOM GROUND
CARBURETORS - BLUEPRINTED
CARBURETORS - STOCK APPEARING HP (BORED)
CARBURETORS - MIKUNIS
CARBURETORS - TILLOTSON
CARBURETORS - GX390 CARBURETOR
ADAPTERS & MANIFOLDS
FUEL SYSTEM - PULSE FITTINGS
JETS AND E-TUBES
HEADS, CYLINDER HONDA
HEADS, CYLINDER AFTERMARKET
PUSHRODS
ROCKER ARMS
RODS, CONNECTING
STROKER KITS
VALVE SPRINGS
RETAINERS, LASH CAPS, AND SHIMS
VALVES AND COMPONENTS
VALVE & VALVETRAIN PACKAGES
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AIR FILTERS
AND KITS |
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Air Filter Adapter and Filter (Fits 240, 270, 340, & 390s) |
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390AFADAPWF |
$41.00 |
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Air Filter Adapter (Fits 240, 270, 340, & 390s Carbs) |
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390ADAP |
$36.00 |
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Air Filter, Race, Open Element (K&N Type), Style may vary, Use with most
air filter adapters |
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AIRFIL |
$22.00 |
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Air Filter, Race, Open
Element,
Genuine K& N, Style may vary,
Use with most air filter adapters |
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KNANGAIRFIL |
$59.95 |
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Air Filter, Sock (Pre Filter), Color may vary |
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SOCK |
$13.00 |
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Choke Holder, Holds choke rod (Grey) in place when using Aluminum Air Filter
Adapters, Adapter must be drilled and tapped. |
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CHOKEHOLDER |
$3.75 |
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BOLT,
STUDS, & HARDWARE |
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Bolt Kit, High Strength Grade 10.9, Includes new high strength bolts and
washers for head and side cover. Use only if studs not
allowed. |
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390BOLTKIT |
$26.00 |
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Stud Kit, Includes Head Studs (B7 Steel), Side Cover
Studs (316 SS), Washers & Nuts, Solid case Dowl Pins,
Mandatory for all HP applications (Note. This kit
use studs only, no bolts) |
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390HDSTUDKT |
$128.70 |
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Dowls, Head shortened, 12 x 16, ea |
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94301-12160 |
$2.60 |
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Dowls, Case, Solid, reduces case flex, Pair
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390NRSOLDOWL |
$6.50 |
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BEARINGS AND
CRANKS |
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Bearing, replacement for ARC Rod, set, GX390 |
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ARCBEAR |
$32.50 |
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Bearing, Clevite 77 (or equivalent), GX270 with NR Rods |
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$26.00 |
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Crankshaft/case Bearing, GX240 GX270
Available in Ceramic, ABEC 7 (High precision, and C4/C3 (Loose
clearance), Sold individually |
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Full Ceramic, C6206C |
$227.50 |
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ABEC 7, SS, 76206 |
$227.50 |
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C3 (Japan), 36206 |
$32.50 |
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Crankshaft/case Bearing, GX340 GX390
Available in Ceramic, ABEC 7 (High precision, and C4/C3 (Loose
clearance), Sold individually |
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Full Ceramic, C6207C |
$128.70 |
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ABEC 7, SS, 76207 |
$115.70 |
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C4 (Japan), 46207 |
$39.00 |
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C3 (Japan), 36207 |
$39.00 |
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Balance Shaft Bearings, GX240,GX270, GX340, GX390
Available in Ceramic, ABEC 7 (High precision, and C3 (Loose clearance),
Sold individually |
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Full Ceramic, C6202C |
$128.70 |
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ABEC 7, SS, 76202 |
$115.70 |
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C3 (Japan), 36202 |
$13.00 |
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CAMSHAFTS
Our
cams are specially developed for Honda GX engines using flow bench and dyno
testing. They are not copies of Briggs (or other) like many of the other
cams on the market. All cams can be custom ground for ICL and LS to tailor
performance to your specification.
Cams use either Genuine Honda Cores or a
Aftermarket core depending on application. |
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250 Lift Cam (OEM 390 Grind). Great for 240s and 270s. |
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390CAM |
$167.70 |
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280 SERIES
Approx .280 lift and 220 duration (at .050). This is a nice cam that
works well on both stock and modified motors. This cam produces lots of low
end torque. One of the best all around cams we offer. HD springs required.
Bored or Aftermarket carb needed. Special Order Only (allow 1 week) |
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Camshaft 280-Marine Special grind for
Marine and Winch Boarding applications. Extreme torque. Designed for
2000 to 5500 RPM, 11 to 1 or Lower compression ratio required, HD Springs
required *(Special order, allow 1 week) |
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390-280-9810 |
$167.70 |
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Camshaft 280-0207 Serious Torque
for Small Tracks 6000 max RPM. 10.5 to 1 compression or more, HD
Springs Required |
390-280-0207 |
$167.70 |
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Camshaft 280-0211 THE ULTIMATE
TORQUE CAM, 5500 max RPM. 10.5 to 1 compression or less, HD Springs
Required *(Special order, allow 1 week) |
390-280-0211 |
$167.70 |
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Camshaft, 280-0607, Great all
around cam for 270s. 6500 RPM. 10.5 to 1 compression or more, HD Springs
Required *(Special order, allow 1 week) |
390-280-0607 |
$167.70 |
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Camshaft, 280-0910, Special cam
for lower compression 270s on big tracks. 7000 RPM. 10.5 to 1 compression
or less 26 lb Springs Required
SPECIAL |
390-280-0910 |
$128.70 |
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306-1
SERIES
Serious camshaft for serious motors. Lobe designed
esp. for Honda 270 - 390 Motors. Approx .306 lift and 240 duration (at
.050). This cams likes big carbs and big ports. |
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Camshaft, 306-0407, 6500 RPM.
11.0 to 1 compression or more. HD or Dual
Springs Required, Small track cam for serious torque |
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390-306-0207 |
$167.70 |
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Camshaft, 306-0807, 7500 RPM.
11.0 to 1 compression or more. HD or Dual
Springs Required, Recommended for most serious GX200s
needing good mid range torque. |
390-306-0807 |
$167.70 |
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Camshaft, 306-MARINE, Serious
Pulling Cam for 390 tractor Applications. 3000 to 6500 RPM. Required,
10 to 1 compression or better *(Special order, allow 1 week) |
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390-0008 |
$167.70 |
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307
SERIES
Same as our 306 series but with 260 degrees duration for more top end
power and higher RPM. |
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Camshaft, 307-0407, 7,500 RPM.
12.0 to 1 compression or more. HD or Dual
Springs Required, Dual Springs Recommended. High torque grind for 1/8 mile
or smaller |
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390-307-0407 |
$167.70 |
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Camshaft, 307-0806, 8,500 RPM.
12.0 to 1 compression or more. Dual Springs
Required, Dual Springs Recommended. High HP grind for 1/4 mile tracks* |
390-307-0807 |
$167.70 |
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356
SERIES
The biggest baddest cam for GX390s. Approx .356
lift Duration. Requires dual springs and special attention to the valve
train. |
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Camshaft 356-0807 8500+ RPM,
Hottest cam we offer. Big Valve and Big Carbs required. Dual Springs
Required, heads will need spring pocket cut. 12 to 1 or higher compression
ration required, |
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390-356-0807 |
$167.70 |
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CAMSHAFTS
- CUSTOM GROUND |
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Looking for a Specific Ground not listed above. NR Racing can custom grind a
Cam for you. Select the Specs on the right. Allow 1 week to ship.
Select from the following Lobe Designs:
.230 Lift, 230 Duration at
.050
.252 Lift, 230 Duration at
.050
.280 Lift, 220 Duration at
.050
.306 Lift, 240 Duration at
.050
.307 Lift, 260 Duration at
.050
.320 Lift, 260 Duration at
.050
.356 Lift, xxx Duration at
.050
(Warning - No returns on these - Please make sure you are selecting the
right specs) |
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$232.70 |
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CARBURETORS - BLUEPRINTED |
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Carburetor, GX270 or GX390 Blueprinted Stock Bore,
OEM Honda, Circuitry rework for better
throttle response when using open element air filter. Stock Venturi, A |
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270 Carb, Blueprinted |
$102.70 |
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390 Carb, Blueprinted |
$128.70 |
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CARBURETORS - GX390 |
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GX390 Carb, OEM Honda, Race Prepped (Choke Removed & Rejetted) |
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390 CARB GAS |
$63.70 |
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390 CARB METHANOL |
$89.70 |
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GX390 Carb, Bored (24mm) OEM Honda, Race Prepped (Choke Removed & Rejetted) |
BORED 390 CARB GAS |
$115.70 |
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BORED 390 CARB METHANOL |
$128.70 |
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CARBURETORS -
MIKUNI FLAT SLIDES |
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Mikuni Flat
Slide 28 mm
Kit includes
manifold/adapter, Air Filter, Air Filter Adapter/velocity stack, hose, &
Clamps. Your choice of Gas or Methanol (28 only).
Note: This a Square Slide carb which is far superior to the cheap round
slide Mikunis
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28 mm Gas Kit |
$284.70 |
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28 mm Gas, carb & Air Filter Adapter/Velocity Stack only |
$206.70 |
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28 mm Methanol Kit |
$297.70 |
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28 mm Methanol , carb & Air Filter Adapter/Velocity Stack only |
$219.70 |
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Mikuni Flat
Slide 34 mm
Kit includes
manifold/adapter, Air Filter, Gaskets, Cable, Hose, & Clamps.
Note: This a Square Slide carb which is far superior
to the cheap round slide Mikunis
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34 mm Gas Kit |
$310.70 |
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34 mm carb only |
$310.70 |
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Mikuni Flat
Slide 33 mm Pumper Kit includes manifold/adapter, Air Filter, Gaskets,
Cable, Hose, & Clamps. The best carb for 270 to 390s |
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33 mm Gas Kit |
$466.70 |
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33 mm Gas, carb only |
$388.70 |
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33 mm Methanol Kit |
$531.70 |
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33 mm Methanol, carb only |
$492.70 |
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CARBURETORS -
MIKUNI ROUND SLIDES |
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32 mm Round Slide Mikuni, Gas with manifold/adapter,
Air Filter, Gaskets, bolts, jet kit, and cable. Low buck way of adding HP,
Choice of long or short adapters |
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32 mm Kit |
$245.70 |
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32 mm Only |
$154.70 |
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Carburetor, Adapter, Mikuni
Flat Slide to GX270/390s |
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39024MMADAP |
$50.70 |
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CARBURETORS & FUEL
SYSTEM - PULSE FITTINGS |
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Fuel Pump Pulse Fitting, Must drill and tap for 1/8" NPT |
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FUELPUMPFITTING |
$2.60 |
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Valve Cover with Pulse Fitting, |
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390 Valve Cover with Pulse Fitting, |
$45.50 |
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CARBURETORS &
FUEL SYSTEM - JETS AND E-TUBES |
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Jet Adjustable for GX160/200 Honda Carb, with remote Cable (Snow moble
applications) |
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RMADJJETC |
$91.00 |
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Jet, Adjustable for all Honda Carbs (GX120 thru GX390 Carbs) |
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ADJJET |
$45.50 |
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Jets, Fixed |
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Jets are listed on Stock Parts Page - Click
Here |
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Welch Plug for GX390 carbs (Covers air metering valve holes located behind
idle mixture adjustment screw)) |
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WELCHPLUG |
$2.60 |
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FLYWHEELS &
FANS |
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Flywheel, Billet Alumium, GX340 GX390
Approx 4.7lbs. ARC flywheels use a Neodymium (rare earth) magnet which is
the most powerful magnet on the market. Uses stock Honda coil. Just bolt-on
and go! Very high quality. |
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Adjustable Timing, w/ ring gear. Will not work with recoil |
$305.50 |
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Non-Adjustable, allows with stock recoil. |
$253.50 |
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GASKETS
(See Stock Parts for Additional Gaskets) |
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Gasket, Head , Copper GX390 |
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.021 |
$32.50 |
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.032 |
$32.50 |
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Gasket, Head .046, |
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See
Big-GX.htm |
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HEADS,
CYLINDER HONDA -
All heads use Genuine Honda cores (these flow better, are less porous, and
stronger than Aftermarket heads). |
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Race Head, race prepped genuine Honda head with choice of OEM
or Stainless Valves.
Heads can be fitted with either single or dual springs at
no charge.
Options including Porting and Milling to choice of
compression ratio |
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HEADS, CYLINDER AFTERMARKET
- Low cost way to add
performance |
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Race Head, race prepped Aftermarket head with choice of
Aftermarket, Honda, or Stainless Valves.
Heads can be fitted with either single or dual springs at
no charge.
Options including Porting and Milling to choice of
compression ratio |
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IGNITION AND
TIMING |
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Key, Offset approx 10 to 11
degrees |
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NRKEY8 |
$13 |
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Key, Offset 5 to 6 degrees |
NRKEY4 |
$13 |
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Boot, Sparkplug, Rubber, NGK Resistor.
Stock boots are subject to cracking from vibration and heat. These are 90
degree rubber boots that will not crack and cause misfires. |
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NGKBOOT |
$13.00 |
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Spark Plug, Split Fire SF6*, For Honda |
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Splitfire |
$7.80 |
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Spark Plug, Platinum BOSCH +4, For Honda |
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BOSCH |
$10.40 |
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NGK BPR6ES (OEM Honda Plug) |
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NGK6ES |
$3.90 |
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NGK Short Plugs These plugs have shorter reach than stock plugs. Used for
excessively milled heads to prevent piston to spark plug interference.
However we recommend the use of washers with a std plug if possible. |
SHORTPLUG |
$5.20 |
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Washer, Sparkplug, .004. Replaces stock washer to sink sparkplug deeper
increasing compression ration. Also use for indexing plug. |
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SPLUGWSHR004 |
$1.30 |
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Washer, Sparkplug, .040. Used in conjunction with stock washer to raise plug
preventing sparkplug from hitting piston. |
SPLUGWSHR040 |
$1.30 |
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Spark Plug Washer Kit, 30 pc, Just the trick for indexing your spark plug.
Kit contains 10 each of .019" .024" and .034" thick copper washers |
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AP5120 |
$13.00 |
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PISTONS & RINGS
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COMING SOON |
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PUSHRODS |
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COMING SOON |
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Pushrods, Chrome Moly, Best Pushrods available, Pair |
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GX240/270
std length |
$39.00 |
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GX240/270
.100 Shorter |
$39.00 |
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GX340/390
std length |
$39.00 |
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GX340/390
.100 Shorter |
$39.00 |
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Pushrods, Chrome Moly, Custom Length, Please Specify, Pair |
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Custom Length |
$52.00 |
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Pushrods, Chrome Moly, Unfinished, Must be cut to length, Includes tube and
two ends, Pair |
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CM250PUSHKT |
$39.00 |
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Guide Plate, Honda, Special for Large Push Rods. |
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MODIFIED |
$6.50 |
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Guide Plate, Billet |
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For CM Pushrods |
$10.40 |
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ROCKER ARMS
(Note: Chinese Motors require Honda OEM Guide Plate when using Long Ratio
Rockers)
For Comparison of Rocker Arms, Click Here |
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Rocker Arms, Reinforced, Price per set |
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390RIROCK |
$65.00 |
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Rocker Arms, Roller 1.2 or 1.3 Ratio, Aluminum. RaceSeng Design. Use with
Stock Height Valves. Set. May have coil bind issues with large cams. |
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1.2 Ratio |
$269.00 |
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1.3 Ratio |
$269.00 |
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Valve Cover Spacer, Needed with Roller Rockers to uses stock valve cover &
baffle |
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390VCSPACER |
$78.00 |
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RODS, CONNECTING |
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Rod Connecting,
GX340/GX390
Billet with Bearing,
Mandatory for all HP applications |
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390ARCROD |
$188.50 |
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Bearing for ARC Rod, std |
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390ARCBEAR |
$28.60 |
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Bolts for ARC Rod |
390ARCBOITS |
$19.50 |
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GX270 Rod with Clevite (or similiar) babbit bearing. Crankshaft must be
ground. Includes bearing. |
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270ROD |
$162.50 |
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VALVES
(all SS valves are
+.100 longer than stock) |
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Valve, Intake, Stainless, 28
mm Lightweight
270 Exhaust Valve |
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28SSVALVE |
$32.50 |
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Valve, Intake, Stainless, 31
mm Lightweight
270 Intake Valve
390 Exhaust Valve |
31SSVALVE |
$32.50 |
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Valve, Intake, Stainless, 32
mm Lightweight
390 Exhaust Valve, Oversize |
32SSVALVE |
$32.50 |
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Valve, Intake, Stainless, 35
mm Lightweight
390 Intake Valve |
36SSVALVE |
$32.50 |
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Valve, Intake, Stainless, 36
mm Lightweight
390 Intake Valve, Oversize |
36SSVALVE |
$32.50 |
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VALVE SPRINGS
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Spring, Valve, Heavy Duty, set (Fits 240, 270, 340, & 390s). |
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390SSPRING |
$26.00
a pair |
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Spring, Valve, Dual, set (Fits 240, 270, 340, & 390s) |
390DSPRING |
$26.00
a pair |
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VALVE RETAINERS, LASH
CAPS, AND SHIMS |
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Retainer, Aluminum, Heavy Duty with keepers, for use single
or dual springs & SS valves, 1 set, includes keepers |
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65RETKT |
$32.50 |
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Keepers, Replacement for Aluminum Retainers, |
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65KEEPERS |
$10.40 |
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Shim, Valve Spring, 032 |
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32SHIM |
$2.60 |
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Shim, Valve Spring, .064 |
64SHIM |
$2.60 |
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Lash cap for Racing Valves. Used to correct Valve Train Geometry (Required
with Roller Rockers), Pair |
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65LASH |
$20.80 |
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Valve Guide, Bronze, each, Honing and/or reaming required to installed, each |
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BROZGUIDE |
$17.00 |
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VALVES, SPRING, AND RETAINER
PACKAGES |
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Stainless Steel Valve Package
#1, Includes
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GX240 to 270
31mm Intake
28mm Exhaust |
$128.70 |
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GX340 to 390
35mm Intake
31mm Exhaust |
$128.70 |
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Stainless Steel Valve Package
#2, Includes
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GX240 to 270
32mm Intake
28mm Exhaust |
$128.70 |
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GX340 to 390
36mm Intake
31mm Exhaust |
$128.70 |
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Stainless Steel Valve Package
#3, Includes
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GX240 to 270
32mm Intake
28mm Exhaust |
$128.70 |
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GX340 to 390
36mm Intake
31mm Exhaust |
$128.70 |
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VALVE
TRAIN PACKAGES |
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Race Valve Train Package #1
Includes
|
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GX240 to 270
31mm Intake
28mm Exhaust |
$245.70 |
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GX340 to 390
35mm Intake
31mm Exhaust |
$245.70 |
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Race Valve Train Package #2,
Includes
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GX240 to 270
32mm Intake
28mm Exhaust |
$258.70 |
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GX340 to 390
36mm Intake
31mm Exhaust |
$245.70 |
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Race Valve Train Package #3,
Includes
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Stainless Valves with OS
Intake
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Dual Springs,
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Aluminum Retainers and
Keepers.
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1.2 Aluminum Roller Rocker
Arms
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Lash Caps
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Chrome Moly Push Rods
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GX240 to 270
32mm Intake
28mm Exhaust |
$388.70 |
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GX340 to 390
36mm Intake
31mm Exhaust |
$388.70 |
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Part/Model numbers are for
reference only and are subject to change. Actual part may have a different
number, however it will be latest available part and will match description.
If you require an exact part number (i.e. for class or rule requirements),
please e-mail. |