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Most OEM calipers pistons are made from aluminum that just cannot hold up to the heat and extreme demands of serious racing
this can break the teeth off the plastic gear
41mm larger than stock
Spark Gap - 0
YAMAHA YZ250F 2001-2004 / WR250F 2001-2013 12.5:1 CR WOSSNER PISTON KIT 8559DC CRF250X Most OEM calipers pistons areMade in Germany Part number: 8547DB Piston size: 94. 96mm ALL PISTON KITS INCLUDE PISTON, RINGS, WRIST PIN, AND RETAINING CLIPS UNLESS NOTED. REPLACEMENT COMPONENTS LISTED BELOW ITEM BORE SIZE PISTON SIZE RING CLIP WRIST PIN 8559DA 77. 00 76. 96 RIK77. 00D3 CW16 WP070 SP 8559DB 77. 01 76. 97 RIK77. 00D3 8559DC 77. 02 76. 98 RIK77. 00D3 8559D200 79. 00 78. 96 RIK79. 00D
US$ 53.95
US$ 48.00
US$ 11.95
US$ 1499.00