Suggested Retail: $99.99. MOTO1988 80mm Big Bore Top End Cylinder Rebuild Kit Piston Ring Tensioner for Honda TRX300EX Sportrax 300 - This is a big bore top end cylinder rebuild kit for Honda TRX300EX Sportrax 300. The package includes 1 cylinder, 1 piston kit, 1 ring kit, 1 spark plug, 3 gaskets, and 1 tensioner. It is a replacement part for 12100-HM3-670 and fits Honda Sportrax 300 TRX300EX 1993-2008, TRX300X 2009, and FourTrax 300 1999. Brand: MOTO1988 Model: ‎12100-HM3-L00 -- LOT STICKER: TCE-BOX-PALLETCEC84-ITEM-43f277bd___LPNO201408349 MOTO1988 80mm Big Bore Top End Cylinder Rebuild Kit Piston Ring Tensioner 19932008 for Honda TRX300EX TRX 300EX Sportrax 300 -- SIZES ARE ESTIMATED. 7 CALENDAR DAY FULL REFUND GUARANTEE (FROM PRIMARY PICKUP DATE) ON THIS ITEM IF ANY ISSUE IS FOUND THAT WAS NOT DESCRIBED/PICTURED. 7 CALENDAR DAY STORAGE (FROM PRIMARY PICKUP DATE) IS ALSO AVAILABLE. THE PRIMARY PICKUP DATE IS THE DAY AFTER THE AUCTION ENDS. SEE NOTES TO BIDDER, IN AUCTION DETAILS, AT THE TOP OF PAGE 1 FOR MORE INFO.