49mm Engine Motor Piston Pin Set For 100cc Motorized Bicycle Bike Motor

Perfect size. Just what I needed.

I was so excited to get going again however the piston is too big, I needed a 49mm× 40.2mm for my A100cc kit this piston is 50mm, I have no use for it now and I can't seem to find the correct piston and rings I need?!?! Not good I need to return and order the correct size what a bummer..

Rings broke before I could get them around the piston.

This piston must be for the yd100They say 49mmActually 50mmIt's a good product just mislabeled

piston marked 50 slightly shorter than yd100 piston i used one in a ld100 with no base gasket .7mm squish the rings are thinner than yd ones

El producto se ve de buena calidad, los anillos son ligeramente mas delgados que los originales del piston YD, lo que afecta en la durabilidad del producto, pero se ajusto bien, aun asi creo que vale la pena mejorar las especificaciones del producto.

Regardless of your discripton down below stating its use for a 100cc bicycle engine you list it as a 49mm piston for which it isn't it's a 50mm piston as its also stamped on the inside of the piston, the piston is slighly true measurement are slightly smaller than 50mm that's expected but also much larger than 49mm so customizers out there beware! Signed, PAULEY T

I bought this just for the bearing spacers and wrist pin to use on a real 49mm build,the piston I got was 50mm and it's was stamped on top of piston.

Piston is even stamped 50 on the inside