Product Details
Description
SSP-G GY6 67mm 4V Forged Piston is a replacement piston assembly for compatible 139QMB scooter engine repairs or rebuilds.
Key Details
- 169-574
Specifications
- Height: 38mm Wrist Pin Diameter: 15mm Compatible Valve Sizes: 23mm/25mm GY6 QMI/QMJ 152/157, Various unlisted makes/models
Compatibility / Fitment
Use the fitment details below to confirm this part matches your scooter before ordering.
- Engine Size: GY6
- Engine Code: 139QMB
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: Will this fit a 139QMB engine?
A: This SKU is listed as compatible with 139QMB engine-code fitment. Always compare your original part and scooter details before ordering.
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 | 0.8 lbs |
|---|---|
| Dimensions | 4 × 4 × 4 in |
SSP-G 67mm forged piston kit for GY6-based 232cc 4-stroke engines with Cygnus-style 4-valve cylinder heads (QMJ152/157, QMI152/157). Forged aluminum piston with four valve reliefs and "67.0" stamped on the crown. Kit includes the piston, three black compression rings, one oil control/scraper ring (textured wavy style), a 15mm dark steel wrist pin, and two circlips. SKU: 169-574 | MPN: 169-574.
Note: This product is intended for off-road and competition use only. Not intended for use on public roads or land.
Key Features:
- SSP-G 67mm forged aluminum piston — four valve reliefs for 4V Cygnus-style cylinder head compatibility
- "67.0" and size marking stamped on crown | forged construction for high-strength, lightweight performance
- Kit includes: piston, 3 compression rings, 1 oil control/scraper ring, 15mm steel wrist pin, 2 circlips
- Compatible valve sizes: 23mm intake / 25mm exhaust
- Designed for GY6 232cc 4-stroke builds | QMJ152, QMJ157, QMI152, QMI157 engines
- Brand: SSP-G
- SKU / MPN: 169-574
- Piston diameter: 67mm
- Piston weight: 133g
- Overall height: 38mm
- Wrist pin diameter: 15mm
- Compatible valve sizes: 23mm / 25mm
- Engine application: GY6 232cc 4-stroke, 4V Cygnus-style head
- Kit contents: piston, rings (3 compression + 1 oil), wrist pin, 2 circlips
| Engine | Notes |
|---|---|
| GY6 QMJ152 / QMJ157 | 232cc 4V Cygnus-style head builds |
| GY6 QMI152 / QMI157 | 232cc 4V Cygnus-style head builds |
| Various unlisted | Other GY6-based 4V Cygnus head 232cc engines |





