TBparts V1 Race Head 114cc Big Bore kit with VM26 Carb Kit. This is for the Honda TRX90.

Starting with the V1 cylinder head’s larger 25/22mm stainless steel (21-4N) valves, better porting, larger cam, improved valve geometry and superior quality this new setup will rev quicker, farther, and make much more power than the stock setup. Add the lightweight high compression 54mm bore kit that brings up the bore to 114cc and makes for a stronger power band. Finish it off with Mikuni’s VM26 carb in our carb kit adding up to a high level of performance at an affordable price! These kits can can make as much power as the larger 125cc Chinese engines. These are high quality parts and require no machining to the cases or other modifications – bolt on and go! There are no installation instructions, but if you can replace your piston, you can install this kit. If you don’t have any experience working on your engine, we highly recommend having a professional technician install this kit or, at a minimum, purchasing the shop manual.

Key Features:

• Race Head V1 – 25/22mm Stainless (21-4n) Valve, 21mm intake port, oversized exhaust port, & improved valve geometry (valve, seals, and springs installed).
• Race Camshaft and Sprocket
• 54mm Aluminum Steel Sleeve Cylinder
• 54mm High Compression Light Weight Piston Kit (91+ octane pump fuel friendly)
• 54mm/114cc Top End Gasket Kit, Clutch Cover Gasket, & Center Case Gasket
• Mikuni VM26 Carb Kit for proven performance,
• Port matched intake, heatstop, gaskets, rotating intake spacer, mounting hardware/wrench, long adjustable throttle cable, and a dual stage foam air filter. (Note: Carb will be front facing)
• No case boring

Kit Contents by Part Number: TBW0788, TBW0318, TBW0721, TBW316, TBW0399, TBW0477, TBW0857, TBW0385,TBW0300, TBW1487