WRIST PIN AND CIR CLIPS. CYLINDER OD = 69.5mm / ID 67mm CYLINDER 69.3mm HIGH. SPECIAL MACHINED J-300 30.5 / 26.5 18cc CYLINDER HEAD.
STUDS FOR INTAKE AND EXHAUST. GREAT FOR YOU POLARIS RAZOR 170 RACERS.
WITH 180cc, 204cc, and 232cc BUILDS. THIS IS THE NEW 170cc - 232cc WITH. BIG 18cc COMBUSTION CHAMBER HEAD. COMPATIBLE WITH POLARIS RZR 170cc. FOR BORING GY6 B-BLOCK AND POLARIS 170 WITH 57mm SPACING ONLY.
ENGINE BORE 67mm X ENGINE STOCK STROKE 57.8mm = 204cc. PLEASE GIVE US A CALL IF YOU HAVE ANY QUESTIONS. THIS PART SHOULD BE INSTALLED BY A PROFESSIONAL MECHANIC.