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Taida GY6 61mm Big Bore Cylinder Kit with Forged Piston - (54mm spacing)

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Taida bolt-on GY6 61mm Big Bore Cylinder Kit to get to 170cc



Working closely with Taida, we were able to produce a bolt on GY6 150 big bore cylinder kit. This Taida 61mm Big Bore Cylinder kit with forged piston will increase your displacement to 170cc with a stock crankshaft. We recommend using this with a Taida Big Port Cylinder Head to get the most out of it.

With cylinder kits are generally two piston options, the stock cast piston and the upgraded forged piston. In terms of function and performance you can expect approximately the same results. However, when it comes to strength, reliability, and safety, you may want to upgrade to the forged piston. With a cast piston, the melted alloy is poured into a mold then finely cleaned and machined until suitable for use. Whereas forged pistons start with a solid cylindrical block of aluminum alloy then stamped and further machined. One of the main points to get out of this is that cast pistons require additional silicon added to increase the hardness and strength of the piston, while a forged piston starts off as a hardened material and is shaped to specifications. For high performance applications and high RPMs, cast pistons can be too brittle and lead to failure.

Additional Info

Additional Info



GY6 150cc 61mm Big Bore Cylinder Kit (A-Case)

  • GY6 125cc and 150cc
  • 54mm Head Stud Spacing / A-Case
  • 100% Bolt On Kit


  • Bore : 61mm Forged Piston
  • 54mm Head Stud Spacing
  • Displacement: 170cc (stock crank)
  • 1 Thin Base Gasket (High Compression)
  • 1 Thick Base Gasket (Low Compression)
  • 1 Head Gasket
  • Piston Pin
  • 2 Piston Pin Clip

Brand Taida Parts


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