Universal Parts 61mm Cylinder Kit - 161QMK 169cc "200cc"

The Universal Parts 61mm Cylinder Kit is a complete OEM-replacement cylinder assembly for GY6 161QMK 169cc engines — commonly marketed as "200cc" — found in Chinese-made buggies, ATVs, and scooters. This kit replaces the cylinder, piston, and all associated hardware in one package.

Important: These 161QMK engines use a wider stud spacing than standard GY6 125/150cc engines. Verify your stud spacing before ordering — There are several 161QMK Variants on the market.

What's Included

• Cylinder (61mm bore)
• Piston with pin, circlips, and rings
• Head gasket
• Base gasket
• Chain tensioner gasket

Key Features

• Correct Stud Spacing: 56mm square, 79mm diagonal — engineered specifically for 161QMK models, often from Vitacci, HHH, Tao Motor, Trailmaster, Coolster, and others.
• Complete Drop-In Kit: Everything needed for a full cylinder replacement in one box.
• OEM Quality Construction: Cast aluminum cylinder with iron sleeve for durability and heat dissipation is sourced directly from engine OEMs to ensure original quality and fit.

Technical Specifications

• Cylinder Bore: 61mm
• Cylinder Stud Spacing (Diagonal): 79mm
• Cylinder Stud Spacing (Length): 56mm
• Cylinder Stud Spacing (Width): 56mm
• Overall Height: 88.75mm
• Cylinder Sleeve Outer Diameter: 64.25mm
• Wrist Pin Diameter: 15mm
• Wrist Pin Width: 49mm
• Engine Compatibility: GY6 161QMK 169cc with above dimensions

Compatibility

The major Chinese brands and distributors utilizing this cylinder specification for their 169cc / "200cc" scooters, ATVs, and buggies include:

• Vitacci: Clash 200 / Clash 200 EFI, Eagle 200, Tanker 200, Focus 200, Fighter 200, Hiker 200, Ranger 200, Striker 200, V-Max 200, V-Sharp 200, Bella 200, Best 200, Bingo 200, Crola 200, Fula 200 and Roket 200.
• HHH / Tank Sports: Tank 200 EFI / Tanker 200 scooters.
• Tao Motor / TaoTao: TaoTao Bull 200 ATV and select 200-series utility buggies using the wide-stud 169cc platform.
• TrailMaster: Select 200-series go-karts and light utility buggies using wide-stud 161QMK 169cc variants.
• BMS Powersports: Select 200cc utility scooters, go-karts and ATVs using this engine setup.
• SSR Motorsports & Coolster: Select 169cc/200cc pit bikes, ATVs and youth buggies built on the 161QMK case.
• Additional existing applications: with matching 161QMK 169cc cylinder specifications.

NOTE: Verify your stud spacing before ordering. 

• 61mm bore for GY6 161QMK 169cc "200" engines
• Wide 79mm diagonal stud spacing — fits buggy/ATV cases (not standard GY6)
• Complete kit: cylinder, piston, pin, circlips, rings, head gasket, base gasket, chain tensioner gasket
• 64.25mm cylinder sleeve outer diameter
• 15mm piston pin diameter, 47.5mm piston pin length

Bore: 61mm | Stud Spacing (Diagonal): 79mm | Overall Height: 88.75mm | Sleeve OD: 64.25mm | Piston Pin Dia: 15mm | Piston Pin Length: 47.5mm | Engine: GY6 161QMK 169cc | Origin: China

Fits GY6 161QMK 169cc engines commonly called "200cc" in buggies and ATVs. IMPORTANT: These engines have a larger cylinder stud spacing (79mm diagonal) than standard GY6 125/150cc engines — verify your stud spacing before ordering. Compatible models include: Vitacci BELLA 200, BEST 200, BINGO 200, CLASH 200, CROLA 200, Eagle 200, FIGHTER 200, FOCUS 200, FULA 200, Flying Pigeons 200, HIKER 200, RANGER 200, ROKET 200, STRIKER 200, TANKER 200, Tough Guy 200, V-MAX 200, V-Sharp 200, TANK 200, and other 161QMK-based 169cc scooters, ATVs, and go-karts.