TFC 63mm Big Bore +3mm Stroker Kit - GY6 A-Case 190cc

TFC 63mm Big Bore +3mm Stroker Kit - GY6 A-Case 190cc

This TFC 63 mm big-bore and +3.0 mm stroker kit is listed for 150 cc GY6 QMI/QMJ A-case engines, with a stated finished displacement of 190 cc. The kit combines a cylinder and head, piston, A8 high-lift cam and stroker crankshaft; the product photos also show ring and gasket components.

This product is intended for off-road use only. This product is not intended for use on public roads or land.

Key Features

63 mm big-bore cylinder: Designed for the listed 150 cc GY6 A-case platform.
Stroker crankshaft: +3.0 mm crank with 60.8 mm stroke.
A8 camshaft: High-lift cam included.
A-case fitment: 54 mm cylinder stud spacing and 65 mm cylinder skirt outer diameter.
190 cc displacement: Stated kit displacement when installed in the specified engine configuration.
Performance use: Off-road use only.
Technical Specifications
Application: GY6 QMI/QMJ 152/157, 150 cc A-case engines
Kit includes: 63 mm cylinder and head, piston, A8 high-lift cam and +3.0 mm stroker crankshaft
Stated displacement: 190 cc
Cylinder bore: 63 mm
Cylinder stud spacing: 54 mm, A-case
Cylinder skirt outer diameter: 65 mm
Intake valve: 28 mm
Exhaust valve: 23 mm
Crankshaft stroke: 60.8 mm
Part number: 179-22
Country of origin: Taiwan