Kick it up another notch with a Wiseco piston for your 1998-2003 Honda XR50 or 2004 CRF50F. The new piston kit comes complete with rings, wrist pin and circlips, and features 11:1 compression to pull your bike out of corners better. Available in a variety of oversizes to keep that 50 running for years, the 39-40mm pistons are $65.40 and the 40.5-41mm units are $71.94.
440/951-6600; www.wiseco.com