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heavy loads and low revolution speed or moderate loads and high revolution speed
Sprocket Shaft Spacer
KX 500 1989-1995
Lightweight alloy construction
• Installer aligns to the crankcase via case bolt and dowel locations
FMF Racing Powercore 2 Shorty Aluminum Muffler w/Stainless End Cap for Yamaha YZ250 02-24 heavy loads and low revolutionFMF Powercore 2 Shorty Silencer Yamaha YZ250 Based on the performance proven platform of the Powercore 2 Silencer, FMF created the Powercore 2 Shorty Silencer, which utilizes a shorter aluminum canister and inner core. This design decreases the amount of back pressure in the muffler, which on a 2 stroke will increase throttle response and low to mid range power. If you spend most of your time riding on tight tracks and trails, the Powercore 2 Shorty