WE ARE PROUD TO PRESENT S3 PISTON KITS
by Vertex
DOESN'T FIT TRIALS MODELS
Important Note: if you have an S-3 (red anodized) head with changeable domes on your bike the dome seal/oring around the spark plug hole is included in the gasket kit
We also carry the S-3 o-ring kits separately if you want some spares.
THIS COMPREHENSIVE KIT INCLUDES EVERYTHING NECESSARY TO REBUILD YOUR TOP END PROPERLY. LET US KNOW IF YOU WANT TO ADD ANYTHING. WE STOCK A FULL COMPLIMENT OF HIGH QUALITY BEARINGS & ROD KITS ETC. TO FULLY OVERHAUL YOUR ENGINE .
S-3 2-stroke pistons are cast for maximum performance and 18% silocone content for strength and durability.
The skirts are moly coated for increased lubricity and easy break in
WE ALSO OFFER ENGINE REBUILDING SERVICES
CUSTOM PPORTING AND HEAD MODIFICATIONS
Improper warm-up-A great way to cold-seize the engine. This also kills crank and rod bearings, not just forged pistons.
Anytime you rebuild the top-end, you have to measure the ring end-gap, and file the ring ends if necessary. I have rarely seen rings that don't need to be relieved slightly. If the end-gap is too tight, the ring ends can hammer the locator pin right out of the piston, with devastating results. Approx .004" per inch of bore size for the optimum ring end-gap clearance.