SSP-G
SSP-G 67mm 4-Valve Cylinder Head - GY6-B 57mm Stud Spacing
Description
This SSP-G 67mm four-valve cylinder head is a Cygnus-style performance head for GY6 B-case four-stroke engine builds with 57mm stud spacing. Give your off-road project a four-valve top end with the cam, roller rockers, timing sprocket, studs, and nuts included. The head pairs a finned body with blue anodized head and cam covers for a distinctive finish. Designed for the 67mm application described as a 232cc build, this is a cylinder head assembly, not a complete displacement kit.
This product is intended for off-road use only. This product is not intended for use on public roads or land.
Key Features
- Four-valve layout: Cygnus-style head design for a compatible GY6 B-case performance build.
- Valvetrain included: Supplied with a cam and roller rockers.
- Build hardware included: Includes timing sprocket, studs, and nuts.
- Anodized covers: Blue head and cam covers complement the finned head body.
- Defined B-case fitment: Requires 57mm cylinder-stud spacing.
- Cam-chain requirement: Uses a 96-link cam chain, sold separately.
Technical Specifications
- Brand: SSP-G
- Part number: 169-572
- Part type: Performance cylinder head assembly
- Head design: Cygnus-style, four-valve
- Bore application: 67mm
- Build displacement reference: 232cc; complete engine configuration determines displacement
- Engine case: GY6 B-case four-stroke
- Required stud spacing: 57mm
- Intake valve diameter: 25mm
- Exhaust valve diameter: 23mm
- Intake port diameter: 30mm
- Exhaust port diameter: 27mm
- Overall height: 144mm
- Required cam chain: 96L, not included
- Intake valve lash: 0.10mm
- Exhaust valve lash: 0.12mm
- Included components: Head, cam, roller rockers, anodized head and cam covers, timing sprocket, studs, and nuts
Compatibility
| Engine application | Required configuration |
|---|---|
| GY6 QMI/QMJ 152/157 engine families | B-case build with 57mm stud spacing and compatible 67mm cylinder configuration |
| Other compatible makes and models | Same B-case, stud-spacing, cylinder, and valvetrain requirements |
Check the engine code and measure the cylinder-stud spacing before ordering. A QMI/QMJ or 152/157 engine designation alone does not confirm B-case fitment. Match the cylinder configuration, cam-chain length, and installation clearances to your build. Cygnus-style describes the head design and does not establish direct Yamaha Cygnus fitment.
This product is intended for off-road use only. This product is not intended for use on public roads or land.
Product Diagrams
Features
Specifications
Brand: SSP-G; Part number: 169-572; Type: four-valve Cygnus-style cylinder head; Bore application: 67mm; Build displacement reference: 232cc, dependent on engine configuration; Engine: GY6 B-case four-stroke; Stud spacing: 57mm; Intake valve: 25mm; Exhaust valve: 23mm; Intake port: 30mm; Exhaust port: 27mm; Overall height: 144mm; Cam chain: 96L required, not included; Intake valve lash: 0.10mm; Exhaust valve lash: 0.12mm; Includes cam, roller rockers, anodized head and cam covers, timing sprocket, studs and nuts; Off-road use only
Model Fitments
GY6 QMI/QMJ 152/157 engine families with B-case configuration, 57mm stud spacing and compatible 67mm cylinder setup; Other makes/models only where the same configuration matches; Requires 96L cam chain, not included; Cygnus-style design is not a direct Yamaha fitment claim
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Same day shipping for orders placed before 2PM (CST) M-F
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30-day return period on eligible items
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Flat-rate shipping for orders shipped to the 48 Contiguous United States.
