Product Description
TAIDA HIGH PERFORMANCE 61MM / 172CC BIG BORE CYLINDER KIT
GY6 125cc / 150cc • A-BLOCK • 54MM STUD SPACING
Upgrade a compatible GY6 125cc or 150cc engine with this TAIDA 61mm Big Bore Cylinder Kit. Designed specifically for 54mm stud-spacing A-Block GY6 engines, this kit uses a slim 62.7mm outer cylinder sleeve diameter, allowing installation on most compatible engines without boring the crankcase.
The kit includes a 61mm cast-iron cylinder, lightweight short-skirt cast aluminum piston, rings, wrist pin, clips, and the required top-end gaskets.
KEY FEATURES
- TAIDA high-performance big bore kit
- 61mm cylinder bore
- Approximately 171cc / marketed as 172cc
- Designed for 54mm A-Block GY6 engines
- 62.7mm outer cylinder sleeve diameter
- No case boring required on most compatible engines
- Short-skirt cast aluminum performance piston
- Cast-iron cylinder
- Made in Taiwan
SPECIFICATIONS
- Brand: TAIDA
- Cylinder Bore: 61mm
- Cylinder Outer Diameter: 62.7mm
- Minimum Recommended Crankcase Opening: 62.9mm
- Stud Spacing: 54mm
- Engine Type: GY6 A-Block
- Cylinder Height Without Sleeve: 69.3mm
- Overall Cylinder Height: 90mm
- Piston: Cast Aluminum, Short-Skirt Design
- Piston Ring Thickness: 1mm / 1mm / 2mm
- Wrist Pin: Approx. 48mm × 15mm
- Country of Manufacture: Taiwan
PACKAGE INCLUDES
- TAIDA 61mm Cylinder Jug
- Piston Ring Set
- Wrist Pin
- Wrist Pin Circlips
- Head Gasket
- Base / Compression Gaskets
- Top-End Gaskets as Shown
ENGINE COMPATIBILITY
Designed for GY6 125cc / 150cc A-Block engines with 54mm cylinder stud spacing.
Common compatible engine families may include:
- 157QMJ
- 152QMI
- 1P57QMJ
- BN157QMJ
This kit may be used on many compatible GY6-powered scooters, ATVs, go-karts and buggies. Fitment should be determined by engine type and measurements—not vehicle make/model alone.
IMPORTANT FITMENT INFORMATION
FITS:
✓ 54mm stud-spacing GY6 A-Block engines
✓ Crankcases with sufficient clearance for the 62.7mm cylinder sleeve
DOES NOT FIT:
✗ 57mm stud-spacing B-Block engines
✗ QMK / K-Block engines
✗ Genuine Buddy 125
✗ Engines without sufficient crankcase clearance
PLEASE MEASURE BEFORE ORDERING.
The crankcase opening should measure approximately 62.9mm or larger for installation without machining. Engines with a smaller opening may require case machining.
INSTALLATION & TUNING
Carburetor re-jetting will normally be required after increasing engine displacement. Additional intake, exhaust, carburetor, camshaft, cylinder-head or CVT upgrades may be used depending on the desired build.
Professional installation is strongly recommended. Always verify piston-to-valve clearance and other internal clearances when combining this kit with aftermarket heads, camshafts or other performance components.
Proper engine assembly, tuning and break-in are important for performance and service life.
PLEASE NOTE
This is an aftermarket high-performance engine component. Always verify your 54mm stud spacing, crankcase opening and engine configuration before purchasing.
TAIDA may update product finishes, markings, packaging or minor component appearance between production runs. The product supplied will meet the listed specifications, but appearance may vary slightly from stock photos.
