S3 is the specialist in Trial and Enduro parts. Innovation and high quality are the key words guiding the design of the elements that will make a difference. Tested in all conditions, the S3 products are at the cutting edge of technology and equip the best riders and trial teams.
- Kit cylinder-piston big-bore for MONTESA-HRC 4RT
- Available in 2 sizes 280cc (Ø80mm) and 300cc (Ø82mm)
- High quality product
- More capacity gives the engine more torque on bottom and more power on revs
- The engine is very smooth on low RPM, and very powerful on high RPM
- Engineering and production 100% made by S3
- Heavy duty casting, with more water capacity and more water circulation, flux spiral
- The kits are delivered ready to fit on the engine, with cylinder and piston already assembled, and gaskets sets.
- Cylinder with NI-CA-SIL S3CYL®
- More power, more dreams
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