This kit includes everything needed to upgrade to our V2 Race Head on your current TBparts 114cc equipped TRX90 & Chinese 86cc – 107/110cc engines (with a 49.5mm Stroke).

TBparts V2 cylinder head’s larger stainless steel (21-4N) valves, better porting, roller cam, and forged aluminum roller rocker arms that allow the engine to rev quicker, farther, and make much more power than other race heads. This cylinder head adds a professional level of performance at an affordable price for the privateer rider. These are high quality, bolt on parts! 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 V2 – Aluminum roller rockers, 28.5mm intake valve, 23.5mm exhaust valve, 26mm intake port, 23mm exhaust port, covers and hardware included (valve, seals, and springs installed).
• Race Camshaft
• 54mm/114cc High Compression Light Weight Piston Kit (91+ octane pump fuel friendly)
• 114cc Top End Gasket Kit

Note: This kit is for TRX90 & Chinese 86cc – 107cc engines (with a 49.5mm Stroke) and our 114cc cylinder ONLY (No cylinder included)

Kit Contents by Part Number: TBW0750, TBW0755, TBW0752, TBW1441, TBW0788, TBW0859