NCY Oil Decompression Tube; Genuine/GY6
NCY Oil Decompression Tube; Genuine/GY6
$57.89
10 in stock
*Note: Free shipping to U.S. mainland (excludes AK, HI, and territories)
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Product Details
Description
NCY Crankcase Decompression Kit – Genuine/GY6
Replacement Part Details
Use this part when the original component is worn, damaged, missing, or no longer working correctly. Many scooter parts can look similar but use different sizes, plugs, brackets, thread patterns, or mounting styles, so careful comparison before purchase is recommended.
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: GY6
Fitment Guide: This compatibility information is based on manufacturer and supplier data. Listed models are common known applications and may not include every compatible scooter. If your scooter has multiple versions or production changes, confirm the correct match before ordering. Check photos, measurements, original part numbers, engine code, model, and related fitment information whenever possible.
Common Fitment Questions
Q: Is this for GY6 scooters?
A: This SKU is listed with GY6 engine-size fitment. Confirm exact model, year, and part style before ordering.
Additional information
| Weight | 1 lbs |
|---|---|
| Dimensions | 8.5 × 7 × 3 in |
| Condition | New |
|---|
Reduce crankcase pressure and free up power with the NCY Crankcase Decompression Kit. Designed for Genuine Buddy and GY6-based engines, this kit replaces your factory dipstick with a high-flow breather system. By venting excess blow-by gases, crankcase air density drops — allowing the piston to move more freely through less resistant air on each stroke. The result is reduced parasitic drag on the crankshaft, more free-revving engine character, and lower risk of oil burn, blown seals, and gasket leaks. A straightforward upgrade for any performance build or high-WOT application.
Intended for off-road / performance use only. Not for use on public roads.
Key Features
- Reduces Crankcase Air Density: Venting blow-by gases lowers crankcase pressure, letting the piston travel through less resistant air for measurable power gains.
- Reduces Parasitic Drag: Less crankcase pressure means less drag on the crankshaft and freer engine revving.
- Protects Seals and Gaskets: Proper venting reduces the risk of blown oil seals, oil burn, and gasket leaks under sustained WOT.
- 27" Oil and Fuel-Resistant Tubing: 12mm ID / 18mm OD for flexible routing options.
- CNC Billet Aluminum Cap: Anodized 17mm filler cap/adapter with 18mm thread.
- Complete Kit: Tube, billet cap, stainless steel hose clamps, and zip ties included.
- Installation Tip: Route the breather tube upward toward the frame before pointing it down to prevent oil mist from escaping.
- SKU: 1100-1282
- MPN: 633U02H
- Thread Size: 18mm
- Tube Length: 27"
- Tube ID/OD: 12mm / 18mm
- Cap Material: Anodized billet aluminum
| Engine Family | Compatible Models |
|---|---|
| Genuine Scooter Co. | Buddy 125, Buddy 150, Buddy 170i, Hooligan, Blur |
| GY6 50cc (QMB139) | 139QMA, 139QMB, 1P39QMB, 147QMD |
| GY6 150cc (QMJ157) | 157QMJ, 152QMI, 161QMK, 1P61QMK |
| Other Brands | TaoTao, Wolf, Icebear, Bintelli, SYM, KYMCO |
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