RK Xtreme Upgrade Kit Yamaha YZF-R6 – 530 Chain Conversion 03-05. Terms and conditions apply. RK Xtreme OE upgrade chain and sprocket kits contain premium OE upgrade RK drive chain. Sorry, our items are NOT available for pick-up. No additional information at this time. You might also like. Oakley O Frame MX Goggles Clear Lens Various Colors. (NLA) ProX Crankseal Set KFX80 03-06. RETCH KTM SIDE PANELS 2019-22 KTM SX/SX-F, VINTAGE LIGHT BLUE. RETCH KTM SIDE PANELS 18-23 KTM 85 SX, VINTAGE LIGHT BLUE.