BIG BORE HEAD & CYLINDER KITS, GY6 – United Express Distribution

Free shipping on most parts

Not sure it fits? Text us a photo and we'll confirm before you buy.

Most orders ship the same day

Same-day shipping on most orders
Fitment help: text a photo to 404-532-9833
Hassle-free returns
Wholesale accounts and dealer pricing

United Express Distribution
47mm Big Bore Cylinder Head with Piston Rings Rebuild Kit - for BBK 80cc 4-stroke GY6/QMB139 Scooters Engines

Regular price $38.50

In stock

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United Express Distribution
80cc Big Bore Head & Cylinder Kit, GY6 69mm

Regular price $52.25

In stock

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United Express Distribution
100cc Big Bore Head & Cylinder Kit, GY6 64mm

Regular price $52.25

In stock

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United Express Distribution
80cc Big Bore Head & Cylinder Kit, GY6 64mm

Regular price $52.25

In stock

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5% off
United Express Distribution
100cc Big Bore Head & Cylinder Kit, GY6 69mm

Sale price $49.50 Regular price $52.25

In stock

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20% off

United Express Distribution
180cc Big Bore Head & Cylinder Kit, GY6

Sale price $87.95 Regular price $109.97

Very low stock

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United Express Distribution
61mm Big Bore Cylinder Head Assembly GY6 169cc 200cc 57mm Stud Spacing Type K-Block 2-Bolt Valve cover

Regular price $64.97

In stock

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United Express Distribution
180cc Big Bore Head & Cylinder Kit, Cam

Regular price $120.97

Low stock

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United Express Distribution
EGR -100cc Big Bore Head & Cylinder Kit, GY6 69mm

Regular price $54.97

In stock

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United Express Distribution
Big Bore Kit-69mm Valves, Scooter 60cc Piston & Ring Set, with wrist pin and Cylinder

Regular price $49.97

In stock

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United Express Distribution
EGR -80cc Big Bore Head & Cylinder Kit, GY6 64mm

Regular price $54.97

Low stock

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United Express Distribution
EGR Big Bore Head & Cylinder Kit for GY6 Scooter 69mm Valves - BBK 80cc Cylinder, Piston, Rings, Wrist Pin, Circlips, Head & Base Gaskets - Fits with 50cc, 60cc, 4-Stroke GY6/QMB139 Engines

Regular price $54.97

In stock

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United Express Distribution
Valve Cover Gasket - GY6 169cc 200cc 57mm Stud Spacing Type K-Block 2-Bolt Valve Cover

Regular price $9.97

In stock

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United Express Distribution
Timing Chain & Guides Set - 94 Roller 47 Links GY6 169cc 170cc 200cc GY6 61mm

Regular price $16.97

Very low stock

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United Express Distribution
Front Drive Variator Clutch Assembly 21 Spline for B-Block Engine 1P63QML - 200cc Kandi KD-200GKM-2 Batman

Regular price $49.97

In stock

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United Express Distribution
Big Bore Kit-64mm Valves, Scooter 60cc Piston & Ring Set, with wrist pin and Cylinder

Regular price $49.97

In stock

View details

Same-day shipping

Most orders ship the same day
Fitment help

Text us a photo and we will confirm
30-day returns

No restocking fee on free ship orders
Wholesale accounts

Dealer pricing available