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Additional mud clearance grooves and weight reduction
Vertex uses unique piston profiles and compression ratios
Yamaha YZ 250X 2016 - 2023
This seal kit can be used as replacement / spare part for the sealing of VHM cylinder head AA33102 (for 2 cylinder heads):
WOSSNER PISTON KIT YAMAHA YZ400F 1998-1999 / WR400F 1998-2000 13.5:1 CR 8639DA 125XC-F Additional mud clearance grooves andMade in Germany Part # 8639DA 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 8639DA 92. 00 91. 95 920XSY CW18 WP053 SP 8639DB 92. 01 91. 96 920XSY 8639DC 92. 02 91. 97 920XSY
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