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Now Available & In Stock Ready to Ship!
Custom CRF150R @wisecopistoninc Design
Features:
Dome Optimized for 12+ Combustion Chamber Shape
Eliminated Valve Pocket Bumps
12.8:1 using OEM Dished Valves
13.2:1 using Flat Face Valves
Same Light Weight as Cast OEM Piston
Skirt Coating
Deck Height Corrected to Tighten Quench Area Clearance using OEM Cylinder Height
*No More Cut Cylinders!*

Retail Pricing is $275

#gregsatv #wiseco #crf150r #gnccracing

Honda TRX90X Plug & Play
Start Button & Tether Switch Assembly
OEM Type Connector
$85

#gregsatv #gncc #jxcracing #necxc #fasttraxx

#twostroketuesday Suzuki LT250R build we finished up for a customer.Full Rebuild, Vapor Blast, Porting/Head Mod and of course the @specbolts to top it all off!

Have a couple of our 285 Big Bores we just finished up that we're getting ready to dyno as well
And of course @hickeyt12 295 TRX Stock Cylinder build
#gregsatv #vintage #2smoke

#twostroketuesday Suzuki LT250R build we finished up for a customer.Full Rebuild, Vapor Blast, Porting/Head Mod and of course the @specbolts to top it all off!

Have a couple of our 285 Big Bores we just finished up that we're getting ready to dyno as well
And of course @hickeyt12 295 TRX Stock Cylinder build
#gregsatv #vintage #2smoke

#twostroketuesday Suzuki LT250R build we finished up for a customer.Full Rebuild, Vapor Blast, Porting/Head Mod and of course the @specbolts to top it all off!

Have a couple of our 285 Big Bores we just finished up that we're getting ready to dyno as well
And of course @hickeyt12 295 TRX Stock Cylinder build
#gregsatv #vintage #2smoke

Very popular package for the #yfz450r this year has been the combination pictured...
#gregsatv SVMF Porting/Valve Job, MXC Intake Camshaft & Spring Kit, 0913+3 Exhaust Cam

Huge Power & Torque Increase utilizing Stock Valves & Throttle Body! Easily pull 2nd gear starts with 14/38 gearing & 20" XC Tires

#gnccracing #jxcracing #natva

Sending @mp939 @pierceperformanceatv some goodies to take one young racers #debore #yfz400 to the next level!
#gregsatv #gnccracing #jxcracing

Blue Line is a baseline from a YFZ450R we built 2 years ago, a bit tired (1HP less than when fresh)
Pump Gas Piston, our Camshafts, Patriot Intake, Sparks Exhaust with our Vortex Base Map

Red Line is with a Pump Gas Piston, Re-Degree Existing Cams to our newest Specs, and our New SVMF Porting/Valve Job. Then, dialed in the Vortex Map

Stock Valve Size, Stock TB
#gregsatv #yfz450r #gnccracing #jxcracing

#gregsatv YFZ450R MX/TT & XC Dual Linkages will be Available 3/25/2026

@gregsatv doing se testing for us. So far numbers are looking good. Definitely sounds good ! 🔥

#performanceexhaust #yfz450r #yfz450 #atvracing #savesportquads

Attention #airfooler Owners!

81-84 Honda ATC250R Custom @wisecopistoninc
Additional Oversize Pistons!
72.5mm (+.100")
73mm (+.120")
73.5mm (+.140")

Save your OEM Cylinder that was previously relegated to .080" oversize, re-sleeve, or the one-off builds.

Plenty of sleeve life left in them to take advantage of, bores directly into the stock cylinder liner.

Full Dome Profile, No Step Cut

Introductory Price of $250 w/TE Gaskets Included

No Pre-Order required, current ETA of May '26

Available from www.gregsatvandcycle.com

Just signed off on our Custom CRF150R @wisecopistoninc Design!
Features:
Dome Optimized for 12+ Combustion Chamber Shape
Eliminated Valve Pocket Bumps
12.8:1 using OEM Dished Valves
13.2:1 using Flat Face Valves
Same Light Weight as Cast OEM Piston
Skirt Coating
Deck Height Corrected to Tighten Quench Area Clearance using OEM Cylinder Height
*No More Cut Cylinders!*

#gregsatv #wiseco #crf150r #gnccracing

Raptor 250 Top End Kits, Std Bore 74mm
@gncc_racing legal for Limited Class
$495 Includes:
74mm Steel Sleeve Replacement Cylinder
Custom @wisecopistoninc 12:1 Piston
TE Gaskets
#gregsatv #jxcracing #eroc #oxcr #wexcr

Gonna be assisting the crew over at @yatesperformanceracing with some @dynojetresearch Dyno testing on their #yfz450r Exhaust System!

This is the same exhaust @colerichardson733 has been ride testing recently...
They have a Carb Model #yfz450 system in the works and need an 06+ Honda TRX450R to fit up a system for it as well! So hit them up if you can spare a bike to them for a bit. #gregsatv #ypr #dyno