It’s extremely compact and encloses in a few millimeters all the technology that STM has developed in 10 years of experience with slipper clutches. With the completely adjustable New Evoluzione 125 spring and Evoluzione secondary spring, you can truly make the 525 a do-it-all (motocross, enduro, supermoto) bike. MSRP is $1049.99.STM: 310/631-4363; www.slipperclutch.com