b'PERFORMANCE ACCESSORIESREAR WHEEL KITOutside idler wheels help keep track in proper alignment and distribute load evenlyRACING TAPE Recommended when adding studs to the models listedTrusted by Team Arctic racers, this sticky tape is extra strong forIncludes wheels, spacer blocks and hardware the toughest applications Sold in pairsEach roll is 2" x 60 yds. 6639-621 BLACK |\'16-\'18 ZR, Thundercat, XF Cross Country 137"; \'16-\'19 M,4639-579 BLACK | Universal XF High Country 141"; \'12-\'18 M 153-162" 5639-103 ORANGE | Universal 7639-883 MEDIUM GREEN | (Same application as 6639-621)6639-622 TEAM ARCTICGREEN | (Same application as 6639-621)6639-617 BLACK | \'14-\'18 ZR; \'12-\'13 F 128-129" 7639-882 MEDIUM GREEN | (Same application as 6639-617)6639-618 TEAM ARCTIC GREEN | (Same application as 6639-617)6639-619 ORANGE | (Same application as 6639-617)FOUR WHEEL KIT Replaces tri-hub rear axle wheels and adds outside wheelsHelps keep track in proper alignment and spread the tractionload evenlyIncludes wheels, machined aluminum spacers and hardware BILLET AXLE WASHERS 7639-865 7.12" WHEELS | \'14-\'18 ZR 129", \'13 F (Except RR) Billet aluminum washers give your 2-wheel rear axle acustom look7639-866 8-" WHEELS | \' 16-\'18 ZR, Thundercat 137"; \'14-\'18 XF; \'16-\'18 M 141"; Sold in pairs\'12-\'18 M 153-162"7639-409 BLACK | \'14-\'18 ZR; \'12-\'18 XF (All); \'09-\'18 M; \'12-\'13 F (Except RR)7639-410 ALUMINUM | (Same application as 7639-409)66Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. This WARNING applies to all items that can be ordered on this page.'