The front disc plate for Yamaha R15 V1 and V2 is 270mm, while the V3 and V4 have a 282mm front disc. The rear disc plate for all versions is 220mm. The braking system for V1 and V2 uses Nissin dual-piston calipers in the front and single-piston calipers at the rear. The V3 and V4 have upgraded braking systems with assist and slipper clutch, and inverted
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