Cylinder kit UMA 177cc Race Spec Minarelli YI-3/4 Motoren (Yamaha YZF-R, MT 125, Beta RR, and many more)

This specially developed 177 cm³ UMA cylinder is optimized for racing and offers outstanding performance. UMA is renowned for racing cylinders and offers the perfect cylinder with its Race Spec cylinder, which has a bore of 62 mm. 

First of all, the cylinder is ceramic coated. This means that it does not rust and is generally more resistant to external influences. It is also more durable and does not scratch or the like. The optimized tensile strength goes hand in hand with the longevity, so that the cylinder also runs reliably with consistent and stable performance at high intensity. Heat dissipation has also been improved. The cylinder can therefore run at high intensity over a longer period of time without breaking down. A real masterpiece!

Looking beyond the general optimizations, the cylinder offers a peak performance of up to 25 hp with the correct engine/electrical configuration!
It is also compatible with Superhead cylinder heads from UMA. The scope of delivery includes the complete cylinder kit with forged pistons, gaskets, sealing rings, etc., which makes installation a little easier. For installation, it is important to remove the cylinder head and ensure that the stud bolt torque of -22 Nm is maintained. The torque for the water pump bolts is -10 Nm.