Athena Big Bore Hyper Race Cylinder Kit 081000/1

Description

Big Bore Hyper Race Cylinder Kit
The race version of the popular Athena 70cc big bore kit, available in one part number.  All parts are available separately for custom builds.
Includes: Shaped, domed cylinder head, state of the art cylinder with special porting, lighter flat top piston assembly (all of which are designed for higher compression and improved combustion efficiency), forged crankshaft assembly with larger 12mm wrist pin, top end gasket set, 19mm Dell’Orto carburetor, carbon reed valve petals, throttle cable, and Athena racing exhaust system.  Replacement of clutch rollers and springs may be needed for proper tuning
Cylinder kits include cylinder, head, piston assembly, reeds, and gaskets
Piston kits include piston, rings, wrist pin, and circlips
Carburetors have a manual choke assembly and include a selection of main jets
Hyper Race crankshafts have a lighter connecting rod, full crank rounds, and special needle bearings, but will not work with OEM type stock or standard Athena big bore pistons due to the larger 12mm wrist pin size.
(70cc) - 47.66mm Bore
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Product Description
Big Bore Hyper Race Cylinder Kit
The race version of the popular Athena 70cc big bore kit, available in one part number.  All parts are available separately for custom builds.
Includes: Shaped, domed cylinder head, state of the art cylinder with special porting, lighter flat top piston assembly (all of which are designed for higher compression and improved combustion efficiency), forged crankshaft assembly with larger 12mm wrist pin, top end gasket set, 19mm Dell’Orto carburetor, carbon reed valve petals, throttle cable, and Athena racing exhaust system.  Replacement of clutch rollers and springs may be needed for proper tuning
Cylinder kits include cylinder, head, piston assembly, reeds, and gaskets
Piston kits include piston, rings, wrist pin, and circlips
Carburetors have a manual choke assembly and include a selection of main jets
Hyper Race crankshafts have a lighter connecting rod, full crank rounds, and special needle bearings, but will not work with OEM type stock or standard Athena big bore pistons due to the larger 12mm wrist pin size.
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