Ban Jing Crankshaft +3.0mm Stroker (GY6)

Description: Ban Jing Crankshaft 57.8mm +3mm Stroker Crank increases standard stroke by 3mm more displacement equals more power for GY6 125/150cc+ 4 Stroke! Include a 1mm cylinder base spacer with an inner bore diameter of 65mm, 57mm stud spacing, perfect for a bolt-on SSP-G Cylinder 63mm BBK (sold separately).

Temperature Modification May Be Required: You'll need to heat the aluminum crankcase area where the crankshaft bearing side will be placed, in order to immediately fit the frozen Ban Jing Crankshaft bearing, seating flush in place. Users assume full responsibility and risk doing so using this Ban Jing Crankshaft.

Specifications:

Includes the following Crankshaft stroker and Cylinder base spacer.

•    1x Crankshaft L: 285mm / Stroke L: 57.8mm +3mm (3000-micron) = 60.8mm
•    1x Piston Wrist Pin Slot ID: 15mm
•    1x Flywheel Shaft Thread: M12 x 16mm
•    1x Flywheel Shaft Bearing: 56mm x 22mm x 15mm
•    1x Variator Shaft Thread: M12 x 16mm
•    1x Variator Shaft Splines: 19
•    1x Variator Shaft Bearing: 56mm x 22mm x 15mm
•    1x 57mm Cylinder Base Spacer ID: 65mm / Thick: 1mm (Fit 57mm Stud ONLY)
•    Made in Taiwan
•    Fit Intake Studs: M6 / Nuts: M6 / Socket: 8mm
•    Fit Exhaust Studs: M8 / Nuts: M8 / Socket: 10mm
•    Fit Flywheel/Variator Shaft Nuts: M12 / Washers: M12 / Socket: 17mm
•    Fit Starter Clutch / Nut: M22 / Washer: M22 / Castle Socket: 28.7<37.6mm
•    Fit Cylinder Studs: 187.5mm 195.5mm 2V / Nuts: M8 / Washers: M8 / Socket: 12mm
•    Fit 54mm Stud Spacing (A-Block)
•    Fit 57mm Stud Spacing (B-Block)
•    Fit Dowel Pin Set (8x14mm)
•    Fit Dowel Pin Set (10x14mm)
•    Fit Woodruff Keys
•    Fit GY6 125/150cc+
•    Optional: cut plastic fan shroud for best fitment

Supported Models: GY6 152QMI 157QMJ 161QMK 161QML Chinese Scooter, ATV, Genuine Buddy, Kymco, Ruckus, Vento

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Item Weight & Product Dimensions:
•    5.868 pounds | 11.5" (L) x 5.25" (W) x 4.75" (H)