VP Pro has announced Evo versions of their RS-502 clutch shoe and RS-502H heavier clutch shoe. Made with a new aluminium alloy, the clutch shoes are now more durable while the weight has been altered. A tiny washer coming with the clutch shoes is the most outstanding feature. After long-term tests and research, they found if they insert a tiny round washer between the clutch shoe and flywheel, friction is largely reduced and thus the engine spools quicker. One set of clutch shoes includes 3 clutch shoes, 3 washers and 3 sets of springs, 0.9mm gold, 1.0mm silver and 1.1mm black.