|
GX240, 270, 340, & 390 RACE PARTS
(Page
takes a while to load)
(Most parts
fit both Hondas and Chinese OHV Engines) |
|
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
|
|
AIR FILTERS
AND KITS |
|
Air Filter Adapter and Filter (Fits 240, 270, 340, & 390s) |
 |
390AFADAPWF |
$27.00 |
|
|
Air Filter Adapter (Fits 240, 270, 340, & 390s Carbs) |
 |
390ADAP |
$17.00 |
|
|
Air Filter, Race, Open Element (K&N Type), Style may vary, Use with
most air filter adapters |
 |
AIRFIL |
$12.00 |
|
|
Air Filter, Race, Open Element,
Genuine K& N, Style may vary, Use with
most air filter adapters |
 |
KNANGAIRFIL |
$45.00 |
|
|
Air Filter, Sock (Pre Filter), Color may vary |
 |
SOCK |
$10.00 |
|
|
Choke Holder, Holds choke rod (Grey) in place when using Aluminum Air Filter
Adapters, Adapter must be drilled and tapped. |
 |
CHOKEHOLDER |
$2.50 |
|
|
BOLT,
STUDS, & HARDWARE |
|
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. |
 |
390BOLTKIT |
$20.00 |
|
|
Stud Kit, Includes Head Studs (B7 Steel), Side Cover Studs
(316 SS),
Washers & Nuts, Solid case Dowel Pins,
Mandatory for
all HP applications (Note. This kit use studs only, no bolts) |
 |
390HDSTUDKT |
$99.00 |
|
|
Dowels, Head shortened, 12 x 16, ea |
 |
94301-12160 |
$2.00 |
|
|
Dowels, Case, Solid, reduces case flex, Pair
|
 |
390NRSOLDOWL |
$5.00 |
|
|
BEARINGS AND
CRANKS |
|
Bearing, replacement for ARC Rod, set, GX390 |
 |
ARCBEAR |
$25.00 |
|
|
Bearing, Clevite 77 (or equivalent), GX270 with NR Rods |
 |
|
$20.00 |
|
|
Crankshaft/case Bearing, GX240 GX270 Available in Ceramic,
ABEC 7 (High precision, and C4/C3 (Loose clearance), Sold individually |
 |
Full Ceramic, C6206C* |
$175.00 |
|
|
ABEC 7, SS, 76206* |
$175.00 |
|
|
C3 (Japan), 36206 |
$25.00 |
|
|
Crankshaft/case Bearing, GX340 GX390 Available in Ceramic,
ABEC 7 (High precision, and C4/C3 (Loose clearance), Sold individually |
|
Full Ceramic, C6207C |
$99.00 |
|
|
ABEC 7, SS, 76207 |
$89.00 |
|
|
C4 (Japan), 46207 |
$30.00 |
|
|
C3 (Japan), 36207 |
$30.00 |
|
|
Balance Shaft Bearings, GX240,GX270, GX340, GX390 Available in Ceramic,
ABEC 7 (High precision, and C3 (Loose clearance), Sold individually |
 |
Full Ceramic, C6202C |
$99.00 |
|
|
ABEC 7, SS, 76202 |
$89.00 |
|
|
C3 (Japan), 36202 |
$10.00 |
|
|
|
|
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. |
|
250 Lift Cam (OEM 390 Grind). Great for 240s and 270s. |
|
390CAM |
$129.00
|
|
|
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. |
|
Camshaft 280-Marine
THE ULTIMATE
TORQUE CAM. 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) |
|
390-280-MAR
|
$129.00
|
|
|
Camshaft 280-TQ
Serious Torque for Small Tracks 6000 max RPM.
9.0
to 1 compression or more, HD Springs Required |
390-280-TQ |
$129.00
|
|
|
Camshaft, 280-RPM, Great all around
cam for 270s. 6500 RPM. 10.5 to 1 compression or more, HD Springs
Required. Great all around Cam for 270s' |
390-280-RPM
|
$129.00
|
|
|
306 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.
Best HP Cam for GX270s, Also great for 390s wanting
excellent Torque |
|
Camshaft, 306-MARINE, Serious
Pulling Cam for 390 tractor Applications. 3000 to 6500 RPM. Required,
9 to 1 compression or better *(Special order, allow 1 week) |
|
390-306-MAR |
$129.00
|
|
|
Camshaft, 306-TQ, 6500 RPM. 9.0 to 1 compression or more.
HD or Dual Springs Required, Small track cam for serious torque.
Works on both 270s and 390s. |
|
390-306-TQ |
$129.00
|
|
|
Camshaft, 306-RPM, 7500 RPM. 11.0 to 1 compression or more.
HD or Dual Springs Required, Recommended for 270s needing
high rpm HP. Great all around Cam for 390s |
|
390-306-RPM |
$129.00
|
|
|
307
SERIES
Same as our 306 series but with 260 degrees duration for more top end power
and higher RPM. Best HP Cam for Serious Power GX390s,
Not recommended for 270s/ |
|
Camshaft, 307 TQ 0407, 7,500 RPM. 12.0 to 1 compression or more. Dual Springs Required, High
TQ grind for small tracks* |
|
390-307-0407 |
$129.00
|
|
|
Camshaft, 307 RPM 0806, 8,500 RPM. 12.0 to 1 compression or more. Dual Springs Required, High HP grind for 1/4 mile+
tracks* |
390-307-0807 |
$129.00
|
|
|
356
SERIES
The biggest baddest cam for GX390s. Approx .356
lift Duration. Requires dual springs and special attention to the
valve train. |
|
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, |
|
390-356-0807
|
$129.00
|
|
|
CAMSHAFTS
- CUSTOM GROUND |
|
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) |
|
$179.00 |
|
|
CARBURETORS - BLUEPRINTED |
|
Carburetor, GX270 or GX390 Blueprinted Stock Bore,
OEM Honda, Japan carbs, Circuitry
rework for better throttle response when using open element air filter.
Stock Venturi, |
|
270 Carb, Blueprinted |
$79.00 |
|
|
390 Carb, Blueprinted |
$99.00 |
|
|
CARBURETORS - GX390 |
|
GX390 Carb, OEM Honda, Race Prepped (Choke Removed & Rejetted) |
|
390 CARB GAS |
$49.00 |
|
|
390 CARB METHANOL |
$69.00 |
|
|
GX390 Carb, Bored (24mm) OEM Honda, Race Prepped (Choke Removed & Rejetted) |
BORED 390 CARB GAS |
$89.00 |
|
|
BORED 390 CARB METHANOL |
$99.00 |
|
|
GX390 Carb, Marine carb, Best stock bore 390 carb available. |
|
390 MARINE CARB |
$99.00 |
|
|
GX390 Carb, Marine carb, Bored, Best Stock Appearing 390 Carb
available, AWESOME. |
BORED 390 CARB GAS |
$149.00 |
|
|
BORED 390 CARB
METHANOL |
$149.00 |
|
|
CARBURETORS -
MIKUNI FLAT SLIDES |
|
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 |
 |
28 mm Gas Kit |
$219.00 |
|
|
28 mm Gas, carb & Air Filter Adapter/Velocity Stack only |
$159.00 |
|
|
28 mm Methanol Kit |
$229.00 |
|
|
28 mm Methanol , carb & Air Filter Adapter/Velocity Stack only |
$169.00 |
|
|
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 |
|
34 mm Gas Kit |
$239.00 |
|
|
34 mm carb only |
$179.00 |
|
|
Mikuni Flat Slide
33 mm Pumper Kit includes manifold/adapter, Air Filter, Gaskets,
Cable, Hose, & Clamps. The best carb for 270 to
390s |
|
33 mm Gas Kit |
$359.00 |
|
|
33 mm Gas, carb only |
$299.00 |
|
|
33 mm Methanol Kit |
$409.00 |
|
|
33 mm Methanol, carb only |
$379.00 |
|
|
CARBURETORS -
MANIFOLDS & ADAPTERS |
|
Manifold, Tillotson HR to GX390 |
 |
TILL390 |
$59.00 |
|
|
Manifold, Mikuni
Flat Slide to GX270/390s, Includes pulse fitting |
 |
39024MMADAP |
$39.00 |
|
|
CARBURETORS & FUEL SYSTEM - PULSE FITTINGS |
|
Fuel Pump Pulse Fitting, Must drill and tap for 1/8" NPT |
 |
FUELPUMPFITTING |
$2.00 |
|
|
Valve Cover with Pulse Fitting, |
|
390
Valve Cover with Pulse Fitting, |
$35.00 |
|
|
CARBURETORS & FUEL SYSTEM - JETS AND E-TUBES |
|
Jet Adjustable for GX160/200 Honda Carb, with remote Cable (Snow mobile
applications) |
 |
RMADJJETC |
$70.00 |
|
|
Jet, Adjustable for all Honda Carbs (GX120 thru GX390 Carbs) |
 |
ADJJET |
$40.00 |
|
|
Jets, Fixed |
 |
Jets are listed on
Stock Parts Page - Click Here |
|
Welch Plug for GX390 carbs (Covers air metering valve holes located behind idle mixture
adjustment screw)) |
 |
WELCHPLUG |
$2.00 |
|
|
GX270 FLYWHEELS |
|
NEW
Flywheel, Billet Aluminum, GX240 GX270 Approx 4.7lbs. ARC flywheels
use a Neodymium (rare earth) magnet which is the most powerful magnet on the
market. Uses stock Honda coil.
Note: Use this flywheel and old style coil to
defeat REV limited on UT2 Motors |
 |
Fixed Timing, Recoil Start |
$190.00 |
|
|
GX390 FLYWHEELS |
|
Flywheel, Billet Aluminum, 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. |
|
Adjustable Timing, w/ ring gear. Will not work with recoil |
$235.00 |
|
|
Non-Adjustable, allows with stock recoil. |
$195.00 |
|
|
SFI certified billet aluminum
small diameter flywheel
-
2.85 pounds
-
5 3/4" diameter
-
Available with or w/o fins
-
14 degrees of adjustable timing
-
Super powerful rare earth magnet
insures reliable ignition
* * * This is the Flywheel for
the Dragsters and ones who want to get out of the hole Quick! ! ! * * *
Coil bracket included |
 |
6607-390 |
$169.00 |
|
|
GASKETS
(See Stock Parts for Additional Gaskets) |
|
Gasket, Head , GX390, Copper |
 |
.021 |
$25.00 |
|
|
.032 |
$25.00 |
|
|
Gasket, Head, GX390, Steel Shim, .010 |
 |
12251-Z5T-003 |
$10.00 |
|
|
Gasket, Head, MLS, Multi Layer Steel, Used for high compression. Extra
sealing. Considered to be the best sealing of all gaskets. |
 |
GX390 |
$14.00 |
|
|
Gasket, Head .046, |
 |
|
|
See bigblockstockparts.htm |
|
HEADS, CYLINDER HONDA
- All heads use Genuine
Honda cores (these flow better, are less porous, and stronger than
Aftermarket
heads).
|
|
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 |
|
|
|
HEADS, CYLINDER AFTERMARKET
- Low cost way to add
performance |
|
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 |
|
|
|
IGNITION AND
TIMING |
|
Key, Offset approx 10 to 11 degrees |
 |
NRKEY8 |
$7.00 |
|
|
Key, Offset 5 to 6 degrees |
NRKEY4 |
$7.00 |
|
|
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. |
 |
NGKBOOT |
$10.00 |
|
|
Spark Plug, Platinum BOSCH +4, For Honda |
 |
BOSCH |
$7.99 |
|
|
NGK BPR6ES (OEM Honda Plug) |
 |
NGK6ES |
$3.00 |
|
|
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 |
$4.00 |
|
|
Washer, Sparkplug, .004. Replaces stock washer to sink sparkplug deeper
increasing compression ration. Also use for indexing plug. |
 |
SPLUGWSHR004 |
$1.00 |
|
|
Washer, Sparkplug, .040. Used in conjunction with stock washer to raise plug
preventing sparkplug from hitting piston. |
SPLUGWSHR040 |
$1.00 |
|
|
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 |
 |
AP5120 |
$9.99 |
|
|
LIFTERS |
|
Our billet lifters are intended
to be used in modified Honda, clone and predator engines with aggressive
camshafts. The billet lifters are precision CNC machined from superior grade
alloy steel and heat treated to resist breakage and ensure engine
durability. The set of billet lifters is 5 grams lighter then stock lifters,
standard length and can be used with most pushrods. |
 |
BILLIF390 |
$40.00 |
|
|
PISTONS & RINGS |
|
Light Weight GX390 Piston |
 |
|
$20.00 |
|
|
PUSHRODS |
|
Pushrods, Chrome Moly, Best Pushrods available, Pair |
 |
GX240/270
std length |
$30.00 |
|
|
GX240/270
.100 Shorter |
$30.00 |
|
|
GX340/390
std length |
$30.00 |
|
|
GX340/390
.100 Shorter |
$30.00 |
|
|
Pushrods, Chrome Moly, Custom Length, Please Specify, Pair |
|
Custom Length |
$40.00 |
|
|
Pushrods, Chrome Moly, Unfinished, Must be cut to length, Includes tube and
two ends, Pair |
|
CM250PUSHKT |
$30.00 |
|
|
Guide Plate, Honda, Special for Large Push Rods. |
 |
MODIFIED |
$5.00 |
|
|
Guide Plate, Billet |
 |
For CM Pushrods
|
$8.00 |
|
|
ROCKER ARMS
(Note: Chinese Motors require Honda OEM Guide Plate when using
Long Ratio Rockers). Billet and Roller Rockers typically need .100 shorter
pushrods.
For Comparison of Rocker Arms, Click Here |
|
Rocker Arms, Reinforced, Price
per set |
 |
390RIROCK |
$40.00 |
|
|
NEW Rocker Arms, Billet Steel, 1.3 GX270 to GX390s, Sold as a pair. The Best Rockers arms available
for the GX270s and GX390s |
 |
1.3 Ratio |
$90.00 |
|
|
Rocker Arms, GX390, Roller 1.2 or 1.3 Ratio, Aluminum. RaceSeng Design. GX340/390s (will not fit 240/270s) |
 |
1.2 Ratio |
$190.00 |
|
|
1.3 Ratio |
$190.00 |
|
|
NEW Rocker Arms, GX270, Roller 1.2 or 1.3 Ratio, Aluminum. RaceSeng Design. Best
Rockers arms available for the GX240/270s (will not fit 340/390s).
Some
clearancing may be needed depending on head/cam combo |
|
1.2 Ratio |
$190.00 |
|
|
1.3 Ratio |
$190.00 |
|
|
Valve Cover Spacer, Needed with Roller Rockers to uses stock valve cover &
baffle |
|
390VCSPACER |
$60.00 |
|
|
RODS, CONNECTING |
|
Rod Connecting, GX340/GX390
Billet
with Bearing, Mandatory for all HP
applications |
 |
390ARCROD |
$145.00 |
|
|
NEW Rod Connecting, GX240/GX270,
Billet
with Bearing, Mandatory for all HP
applications
Bolt in, no
crank grinding needed |
|
270ARCROD |
$109.00 |
|
|
Bearing for ARC Rod, std |
|
GX390 |
$22.00 |
|
|
GX270 |
$22.00 |
|
|
Bolts for ARC Rod |
|
390ARCBOITS |
$15.00 |
|
|
GX270 Rod with Clevite (or similar) babbit bearing. Crankshaft must be
ground. Includes bearing. |
 |
270ROD |
$145.00 |
|
|
VALVES
(all SS valves are +.100
longer than stock, Lash Caps are required with these stainless valves) |
|
Valve, Intake, Stainless, 26 mm
Lightweight
270 Exhaust Valve |
|
26SSVALVE |
$25.00 |
|
|
Valve, Intake, Stainless, 28 mm
Lightweight
270 Exhaust Valve, Oversize |
28SSVALVE |
$25.00 |
|
|
Valve, Intake, Stainless, 31 mm
Lightweight
270 Intake Valve
390 Exhaust Valve |
31SSVALVE |
$25.00 |
|
|
Valve, Intake, Stainless, 32 mm
Lightweight
390 Exhaust Valve, Oversize |
32SSVALVE |
$25.00 |
|
|
Valve, Intake, Stainless, 35 mm
Lightweight
390 Intake Valve |
36SSVALVE |
$25.00 |
|
|
Valve, Intake, Stainless, 36 mm
Lightweight
390 Intake Valve, Oversize |
36SSVALVE |
$25.00 |
|
|
Valve, Intake, Stainless, 38 mm
Lightweight
390 Intake Valve, Oversize |
38SSVALVE |
$30.00 |
|
|
Seat for 38mm valve |
|
38SEAT |
$12.00 |
|
|
VALVE SPRINGS
|
|
Spring, Valve, Heavy Duty, set (Fits 240, 270, 340, & 390s). |
 |
390SSPRING |
$20.00
a pair |
|
|
Spring, Valve, Dual, set (Fits 240, 270, 340, & 390s) |
390DSPRING |
$20.00
a pair |
|
|
VALVE RETAINERS, LASH CAPS, AND SHIMS |
|
Retainer, Aluminum, Heavy Duty with keepers, for use single or dual springs & SS valves,
1 set, includes keepers |
 |
65RETKT |
$25.00 |
|
|
Keepers, Replacement for Aluminum Retainers, |
 |
65KEEPERS |
$8.00 |
|
|
Shim, Valve Spring, 032 |
 |
32SHIM |
$2.00 |
|
|
Shim, Valve Spring, .064 |
64SHIM |
$2.00 |
|
|
Lash cap for Racing Valves for 6.5 mm (GX390 and 13 hp) stems. Used to correct Valve Train Geometry (Required
with Roller Rockers), Pair |
 |
65LASH |
$16.00 |
|
|
Valve Guide, Bronze, each, Honing and/or reaming required to installed, each |
 |
BROZGUIDE |
$10.00 |
|
|
VALVES, SPRING, AND RETAINER PACKAGES |
|
NEW
NR Race Valve Package
Includes
-
SS Lightweight intake
-
SS Exhaust
Valves,
-
Choice of springs
-
Aluminum Retainers
-
Split Keepers
-
Lash Caps
|
 |
NR VALVE KIT ORDER FORM
$99
Select Options
below and click button to add to shopping cart
|
|
VALVE
TRAIN PACKAGES |
|
NEW
NR Race Valve Train Package
Includes
|
   |
NR VALVE TRAIN KIT ORDER FORM
$179
Select Options
below and click button to add to shopping cart
|
|
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. |
