For those on a budget, the Taida Yamaha Zuma 125cc Performance Kit with the 58.5mm Cast Piston gets you to 155cc without putting the damage of a large upgrade on your wallet. This allows you to get the 155cc upgrade you want with the inexpensive, yet strong Taida 58.5mm Cast Piston. This Taida Cylinder kit is also available for the stock crankshaft or you can upgrade to the 3.5mm Taida Zuma Stroker Crankshaft for 164cc of big engine fun! This kit also comes with a ceramic cylinder for better heat reduction and longer run times.
Specifications
Taida 58.5mm Ceramic-Coated Aluminum Cylinder
Taida 58.8mm Cast Aluminum Piston
Taida 58.5mm Piston Ring Kit
Taida Piston Pin and Clips
1 Thin Base Gasket for Higher Compression
1 Thick Base Gasket for Lower Compression (recommend for +3.5 crank)