For Yamaha golf cart 2-cycle gas G1 all years,

Standard bore on Yamaha G1 is 2.678 US or 68.02mm

Club Car electric 1990-up

E-Z-GO electric 1989-up with solid state non DCS

Yamaha electric 1989-up with solid state non DCS

E-Z-GO electric 1978-up

E-Z-GO 2-cycle gas 1978-1993

Package of 10

For Yamaha golf cart G11 gas 1996-up, and G16 On most of the G-16's the standard bore is .78mm, but please measure first as Yamaha had various blocks for those G-16's Also note:1999 and up G16, G19, G20, G21 and the Drive have a 85mm piston as standard bore

For Yamaha golf cart gas G11 (1996-up), G16

.50mm oversized

Fits E-Z-GO electric 1994-1997

Fits E-Z-GO 4-cycle gas 1994-1997

E-Z-GO ST350 gas 1996-2003

Fits E-Z-GO gas carts

Fits E-Z-GO 4-cycle gas 1991-up