Genuine/GY6 Crankcase Decompression Kit
ITEM# TT-26757
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Description
Crankcase Decompression Kit for Genuine Buddy and GY6 Engines
This crankcase decompression kit suits Genuine Buddy scooters and engines based on the GY6 design. It takes the place of the stock dipstick with a breather setup that lets air move through more freely. It is one of the GY6 scooter parts available, and by letting the piston travel with less resistance it can help the engine respond more quickly to the throttle while lowering the chance of oil leaking out.
Performance Benefits
Venting gases that build up inside the crankcase lowers the air density there, which can translate into a measurable gain in power. Reduced pressure cuts down on drag acting on the crankshaft, so the engine can rev more smoothly. The kit is especially useful for off-road riding and full-throttle use, where it can help guard against blown seals and gasket leaks.
Quality Components
The kit comes with 27-inch tubing that resists oil and fuel, measuring 12mm inside and 18mm outside, so it can be routed in several ways. The anodized CNC billet aluminum cap has an 18mm thread and gives the engine area a polished appearance. Durable hose clamps and fasteners are included to hold everything securely in place.
Specifications
- Material: Anodized billet aluminum
- Size: 27" tubing
- Tube ID/OD: 12mm / 18mm
- OEM Part Number: 633U02H
- Thread Size: 18mm
- Fits: Genuine Buddy 125/150/170i, Hooligan, Blur and GY6 50cc/150cc engines (QMB139)
Fitment
Compatible with:
- Genuine Buddy 125, Buddy 150, Buddy 170i, Hooligan, Blur
- GY6 50cc engines (QMB139): 139QMA, 139QMB, 1P39QMB, 147QMD
- GY6 150cc engines (QMJ157): 157QMJ, 152QMI, 161QMK, 1P61QMK
- TaoTao, Wolf, Icebear, Bintelli, SYM, KYMCO
How to choose: Find the engine code stamped on your engine case and match it to the GY6 50cc (QMB139) or 150cc (QMJ157) group listed above. Then confirm that the 18mm thread lines up with your factory dipstick opening.
Shop more: GY6 Scooter Parts · Chinese Scooter Parts · Scooter Engines & Engine Parts · Scooter Parts
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