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Fits 98mm JE Pistons on Yamaha YFZ450R fuel injection models for increased displacement and horsepower
The piston uses pump or race gas
It was apparent early on that a lightweight high flowing KPMI® stainless race valve was not going to be the complete answer
Reducing weight on the top end lets your motor spin faster while improving exhaust flow
Arctic Cat (Snow)
Yamaha Grizzly 550 YFM500 SKF OEM Upgrade Complete Front Rear Wheel Bearings Kit 4100-1 Fits 98mm JE Pistons onGet your ATV riding like new again with these SKF premium wheel bearings for Yamaha ATVs! They offer superior performance and durability over stock. Features: Direct SKF OEM upgrade fits Yamaha Grizzly's 550s, 660s, & 700s! High quality German French bearings exceed OEM specs ABEC 5 precision races for smooth, fast operation NBR seals provide extreme water & contamination protection Proprietary off road grease stands up to mud, dust & abuse 3 Year