Valve Set for 250cc Scooters

Valve Set for 250cc 4-Stroke Water-Cooled Engines

This valve set suits 250cc 4-stroke water-cooled engines and helps the engine breathe efficiently. The kit contains both an intake valve and an exhaust valve, so it covers the core components responsible for engine efficiency. Healthy scooter cylinder heads & valves are essential for controlling air coming in and exhaust going out. If you hear ticking or notice weak compression, a replacement is worth considering.

When to Replace It

Consider swapping out this valve set if you see low compression, hear ticking, or find burnt valves. Any of these signs suggest the engine may need cylinder head work to get back to normal operation.

Specifications

• Valve Length: 77.35mm
• Exhaust Valve Outer Diameter: 26.3mm
• Intake Valve Outer Diameter: 30.3mm
• Outer Diameter of Stem: 5mm
• Fits: 250cc 4-stroke water-cooled BN172MM engines (172mm), universal valve set

Fitment

Compatible with:

• Boreem (BMS) 250cc 172mm 4-stroke
• CFmoto V3/V5 250cc 172mm 4-stroke
• Honda 250cc 172mm 4-stroke
• Kazuma 250cc 172mm 4-stroke
• Roketa 250cc 172mm 4-stroke
• SUNL 250cc 172mm 4-stroke
• Tank 250cc 172mm 4-stroke
• Various unlisted makes/models (250cc 172mm 4-stroke)

How to choose: Confirm your engine is a 250cc BN172MM 4-stroke water-cooled design, then check that the intake face measures 30.3mm, the exhaust face 26.3mm, and the length 77.35mm.

Shop more: Scooter Cylinder Heads & Valves · Scooter Parts