Uma cylinder 183 R125 - MT125 V2 - XSR125 VVA E5
The 183 UMA Racing kit is ideal for enthusiasts wishing to have good power and good torque. This UMA Racing cylinder has a 63mm bore with a ceramic treatment to offer you a displacement close to 180cc. Mounts with an original cylinder head with 19.5/17 valves or 20/23 racing cylinder head. It comes complete with 63.00mm forged piston, segments, clips, axle, gasket set and assembly instructions. Mounts on Minarelli 125 4T LC VVA Euro 5 injection engines for Yamaha R125 2019-, MT 125 2020-, XSR 125 2021-, Fantic Caballero 125 2021-, Fantic XEF and XMF 125 2021-, Beta RR 4T LC motorcycles 125 2021-.
Technical advice: To replace your cylinder, you will need to provide for the dismantling of your cylinder head. After disassembly, it is necessary to tighten and loosen the cylinder head twice in order to benefit from a good crushing of the cylinder head gasket. The tightening torque of the screws and studs are: 22Nm for the 4 studs
and 10Nm for the 2 screws on the water pump side.
For motorcycles with high mileage it is necessary to check the condition of your water pump. We advise you to add a SCK Racing VVA oil pump and to put a new timing chain. A 34 mm throttle body will go very well with this 183 kit. Please look at the vehicle table below, in order to see the possible assembly! ⮷
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