We now offer a fully built Patriot Hsk921R big bore engine where we take your stock 850 in exchange.We have been working on this project for 3 years and have come to the conclusion that we can only deliver a fully built engine so that the customer gets a real big bore power
- Up to 15% peak power (more than 850)
- Billet top with interchangeable domes
- Full race portet block
- lake race portet cylinder
- 2019 Modified to 2020 Lubrication of middle crank bearing
- modified exhaust valves
- Rebuilt oem pipe
- 98 octane or race fuel
Recommended accessories
- High flow 921 y-pipe
- Trail 921 end damper
- Own torque-link box
- Torque link flat 921 big bore
- Hsk 921 5.0 variator kit
When ordering, we need 1 850 engine with exhaust valves, oem pipe (swan), ecu for reflash. You get a new replacement engine with all updates so it is relatively short delivery time
NB: Alle big bore trim selges uten noen Garanti