SPECIAL ORDER: 10+ Quick view ARC Racing (2) Pack of GX240/GX390/Predator 420 Heavy Duty 50# Valve Springs 2 Pack of Heavy Duty Valve Springs for Honda GX240, GX270, GX340, & GX390.Approx 50 lbs at 1.125 installed height, 42lbs at 1.2, with 110 lb open pressure (.375 lift). $12.99 Add to Cart
Quick view Valve Grinding Compound 120 and 220 Grit High temperature grease for lapping, grinding, sharpening and polishing metal surfacesContains sharp, graded and extremely hard grains of silicone carbide. Two .75 ounce tubes included Helps in... $12.79 Add to Cart
Quick view Feeler Gauge - .0015" to .015" Use for setting valve clearance.Has 9 leaves, 0.0015, 0.002, 0.003, 0.004, 0.006, 0.008, 0.010, 0.012, 0.015 Sets consist of 1/2" wide leaves nested in a steel frame. Each leaf is clearly marked with... $9.99 Add to Cart
Quick view Predator Champion Shaft Mounted 1.1:1 Rocker Arms GX390 Predator 420 Shaft Mounted 1.1:1 Ratio Rocker Arms for GX390, 420 OHV, and 460cc These are the famous "Champion" HD shaft rockers for GX390 and 420 OHV engines. They are arguably the best bang for your buck when... $28.99 Add to Cart
Quick view ARC Racing GX390 Dual Valve Spring Set GX390 Dual Valve Spring SetGX390 Dual Valve Spring Set65lbs at 1.125" installed height. 60lbs at 1.2" installed height. $16.99 Add to Cart
Quick view NR RACING Split Keepers for Stainless Valves with 6.5mm Stems Split Lock Keepers for Aluminum Retainers for 6.5mm Stainless Valves (GX270, GX390, and 13/15 hp Clones) Sold as a pair (2 keepers) to do 1 Valve $7.99 Add to Cart
Quick view Billet valve Cover GX390 Predator 420 Non-Hemi High Quality Lightweight Billet Valve cover for Big Block Fits Honda s and 13/15 Hp Chinese OHV Extra Tall to clear Roller Rockers.ย Includes Pulse fitting and boltsBEST COVER ON THE MARKET $74.99 Add to Cart
Quick view Cut to Length Chrome Moly Pushrod, 1/4" Fits Predator 420 and GX390 *Depending on availability, pushrods may be black anodized or uncoated. Heavy Duty Chrome Moly Pushrods. Considerably stiffer than stock. Use with all HD springs. Capable of 10,000 RPM +. Pushrod,... $16.95 Add to Cart
Quick view NR RACING Lash caps, 6.5 mm, Hardened for Stainless Valves (GX270 & GX390), Pair 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 $9.99 Add to Cart
Quick view Pushrod Length Checker - Big Block Adjustable Push Rod tool for checking for proper pushrod length. Adjust from approx 1.2". Must be used with stock springs. perfect for determining proper pushrod length and valve geometry. DO NOT RUN... $29.99 Add to Cart
Quick view Stainless Steel Valve Kit for Predator 420 Hemi Stainless Steel Race Valve Package for the Predator 420cc Hemi engine only. The stainless swirl polished valves will flow much better than stock the stock valves and the split keepers will keep... $199.00 Add to Cart
Quick view ARC Racing GX390 Stainless Steel Retainer Set w/ Keepers GX390 Stainless Steel Retainer Set w/ Keepers $29.99 Add to Cart
Quick view PREDATOR 420 Billet Valve Cover Predator 420 Hemi High Quality Lightweight Billet Valve cover for the Predator 420 HemiExtra Tall to clear Roller Rockers Includes Pulse fittings and bolts. BEST COVER ON THE MARKET! Due to increased height, may cause... $99.99 $97.95 Add to Cart
Quick view NR RACING Aluminum Retainer for 6.5 mm Valves Aluminum Retainer for use with split keepers. Use with HD/Dual Springs & SS Valves. 6.5mm Valve Stem RETAINERS ARE SOLD INDIVIDUALLY - 2 REQUIRED PER MOTOR KEEPERS ARE NOT INCLUDED - ORDER... $6.99 Add to Cart
Quick view Gage Black Venom 1.3 Ratio Roller Rockers Fits Honda GX390 Predator 420 Non-Hemi The Gage Black Venom Roller Rocker Arms are a high-quality component designed to enhance the performance of your engine.Fits Honda GX390, Predator 420 non-Hemi, and most 13-16 HP Clone engines with... $265.00 $249.00 Add to Cart
Quick view Titanium Retainer for 6.5mm Stemmed Valves (GX270, GX390. Predator 420) Retainer, Titanium for use with split keepers, for use with HD/Dual Springs & SS Valves. 6.5mm Valve Stem RETAINERS ARE SOLD INDIVIDUALLY - 2 REQUIRED PER MOTOR KEEPERS ARE NOT INCLUDED - ORDER... $21.50 $20.85 Add to Cart
Quick view Valve Cover, Billet Aluminum - GX270 & GX390. Light Weight - BLACK High-Quality Lightweight Billet Valve Cover for Big Block Fits Honda 's and 13/15hp Chinese OHVExtra tall to clear roller rockers - Includes pulse fitting and boltsBEST COVER ONย THE MARKETAvailable... $79.95 $74.99 Add to Cart
Quick view PREDATOR 420 Roller Rockers 1.3 Ratio Predator 420 HEMI Predator 420cc 1.3 Ratio Rocker Arms with shaft-mounted roller tip Fits Predator 420 Hemi engines ONLY. Will not fit Old Style 420s or Fits Honda s. $189.00 $179.00 Add to Cart
Sold out Quick view 1.2 Ratio Rocker Arms, Roller, Shaft Mounted, Billet Steel, GX390 Predator 420 Non-Hemi Rocker Arms, GX390, Predator 420 Non-Hemi, Shaft Mounted Roller.Super Strong economical alternative to the Aluminum Rollers. 1.2 Ratio These rockers require a shorter pushrod at 5.620". Typically 0... $129.99 Out of stock
Quick view NR RACING Stainless Valve 31.5 mm x 6.5 mm 31.5mm face x 6.5mm stem x 3.465" Long. Stainless Steel. Requires Aluminum or Titanium retainers and split keepers. +.100 Longer than stock Used for GX390 Oversize Exhaust Valves and many 13/15 HP... $89.95 Add to Cart
Quick view Gage Black Venom 1.2 Ratio Roller Rockers GX390 Predator 420 non-Hemi The Gage Black Venom Roller Rocker Arms are a high-quality component designed to enhance the performance of your engine. Fits Honda GX390, Predator 420 non-Hemi, and most 13-16 HP Clone engines with... $265.00 $249.00 Add to Cart
Quick view NR RACING Spacer, Valve Cover, Billet Aluminum, GX270 & GX390 Predator 301 420 non-Hemi "Billet Aluminum Valve Cover Spacer for GX270 and GX390 Allows roller rockers to clear valve cover baffle. Valve cover spacer nestles nicely under the stock valve cover, and comes with a... $39.26 Add to Cart
SPECIAL ORDER: 10+ Quick view NR RACING Stainless Valve 35 mm x 6.5 mm 35mm face x 6.5mm stem x 3.465" Long. Stainless Steel. Requires Aluminum or Titanium retainers and split keepers. +.100 Longer than stock Used for GX390/Predator 420 Intake valve. Measure the... $89.95 Add to Cart
SPECIAL ORDER: 10+ Quick view ARC Racing GX390 Exhaust Valve Spring Retainer GX390 Exhaust Valve Spring Retainer $8.99 Add to Cart
Quick view NR RACING Lifter, 13hp, Aftermarket Replacement (Chinese), Each Aftermarket Replacement Lifter for 13/15hp Chinese OHVs*Note: Sold individually.ย Clone lifters have a lot of variance in length and may be slightly longer than Genuine Honda lifters. $3.99 Add to Cart
SPECIAL ORDER: 10+ Quick view ARC Racing GX390 Intake Valve Spring Retainer GX390 Intake Valve Spring Retainer $8.95 Add to Cart
Quick view NR RACING Rocker Arms, Reinforced, GX240 to GX390, Pair, Predator 420 non-Hemi "1.1 Ratio Reinforced Rocker Arms - Pair 1.1 Ratio Reinforced Rocker Arms - Pair Welded and reinforced for use with HD springs Fits GX390s, 420 OHVs, and GX270s non-Hemi engines *Style may vary... $45.95 Add to Cart
SPECIAL ORDER: 10+ Quick view OMB 54# Valve Springs Pair GX240/270/390 Predator 420 Severe Duty Valve Springs - Pair Fits Honda GX 240, 270, 340, and 390, Predator 301/420 (Hemi and non-Hemi heads), and most 13-16 HP Clone engines Made of high-quality alloyApproximately 54lb at 1... $29.14 $27.99 Add to Cart
Quick view Rocker Arms, Roller Tip, Billet Steel; GX270, GX390, & 13/15 Chinese OHV; 1.2 Ratio, Pair NR Racing Roller Tip Rocker Arms for GX270, GX390, and 13/15 Chinese OHV - PairChoice of 1.2 or 1.3 Ratio Machined from chrome-moly steel Hardened roller tips and shafts Dyno-tested to 10,000rpm and... $109.00 Add to Cart
Quick view Honda Cylinder Head, GX390, UT1 (big port), Bare, Genuine Honda Head isย finished but does not include Valves, Studs, springs, guide plates, seals, etc. For Honda GX390 and Predator 420 NON-HEMI $80.80 $73.99 Add to Cart
Quick view Cylinder Head, Honda GX390 Bare Heads are finished and ready for assembly, but do not include Valves, Studs, springs, guide plates, seals, etc. Picture is for reference only $69.99 Add to Cart
Quick view Stainless Valve, 36mm x 6.5mm 36mm face x 6.5mm stem x 3.465" Long. Stainless Steel. Requires Aluminum or Titanium retainers and split keepers. +.100 Longer than stock Used for GX390 Oversize Intake and many 13/15 OHV... $89.95 Add to Cart
Sold out Quick view NR RACING Stock Rocker Arms, 420 Hemi Predator, OEM with Pins, Pair "Rocker Arms for Hemi 420 Predators Includes pins and hardware Will not fit OHVs " $12.99 Out of stock
Sold out Quick view NR RACING Valve Cover, 420 Hemi Predator OEM 420 Hemi Predator Valve Cover*Note:ย Will not fit OHVs. Gaskets and bolt/washer not included. $22.65 Out of stock
Sold out Quick view Predator Valve Set, Predator 420, 38/34mm Valves Stock Replacement valve set for 420 Predators, 38mm Intake, 34mm ExhaustIncludes Retainers and keepers SPRINGS NOT INCLUDED (pic for reference only)New Take Off $18.42 Out of stock
SPECIAL ORDER: 10+ Quick view NR RACING Valve, 34mm x 6.5mm "Stainless Steel Valve 34mm Face x 6.5mm Stem x 3.465"" Long Requires aluminum or titanium retainers and split keepers +.100 Longer than stock Used for 420 Hemi Predator exhaust. Can be used on... $89.95 Add to Cart
SPECIAL ORDER: 10+ Quick view NR RACING Valve, 38mm x 6.5mm "38mm x 6.5mm Stainless Steel Valve 38mm Face x 6.5mm Stem x 3.465"" Long Requires aluminum or titanium retainers and split keepers +.100 Longer than stock Used for 420 Hemi Predator intakes. Can be... $89.95 Add to Cart
Quick view NR RACING Valve, 40mm x 6.5mm "40mm x 6.5mm Stainless Steel Valve 40mm Face x 6.5mm Stem x 3.465"" Long Requires aluminum or titanium retainers and split keepers +.100 Longer than stock Requires larger seat " $89.95 Add to Cart
Quick view NR RACING Valve, 42mm x 6.5mm "42mm x 6.5mm Stainless Steel Valve 42mm Face x 6.5mm Stem x 3.465"" Long Requires aluminum or titanium retainers and split keepers +.100 Longer than stock Requires larger seat " $63.15 $59.95 Add to Cart
