The piston weighs like the original and it is shorter in height, the piston finger is thick, 3 times thicker than the original. The cylinder has the same purge windows as the original. the sleeve is very thin about 3mm. The purge channel has a very thick partition 2 times thicker than the original. There are light casting flaws but not critical. I would advise you to squander the original cylinder, because the liners are the same in outer diameter.
View Detail134.88 USD (19,801 JPY)
Delivery Information
Temporarily out of stock.
Restock around 14th Jul. 2025
Product detail
[Specification]
133.8cc bore 57mm
**When using the stock head, the compression pressure will be considerably higher, so please use two of the supplied base gaskets when assembling.
*Be sure to use a compression gauge to measure the compression pressure before setting.
*Cannot be installed on bikes with 4-cycle engines.
*There may be changes in product specifications due to the manufacturer's reasons.
.
■This is a big bore kit with 57mm piston diameter.
Points of Attention
* If there may be an instruction manual included, it will be written in Japanese.
New Motorcycle Rider
Hi, what was your performance?
2 months ago