This is old bevel gear Gpm Racing without tuning this is destroy bavel gear because i have installed plastic house ( stock ) for bavel gear ... I recommended buy aluminium house for bevel gear which i mentioned in previous post http://www.gpmracing.com.hk/en/product-detail?id=217&fid=43&cat=YETI-XL-MONSTER-BUGGY#sthash.OPxs2q5t.dpbs and i also recommended buy new bevel gear from gpm racing if your old is broken here is link : http://www.gpmracing.com.hk/en/product-detail?id=261&fid=43&cat=YETI-XL-MONSTER-BUGGY#sthash.GuWeTLqF.dpbs if this two parts you have already buy ... next parts what i recommended buy for your protection bevel gear is : Aluminum-Bevel-Collar-Red-amp-15mm-Diff-Shims-For-Axial-Yeti-XL-1-8-RC-Car-Buggy which you can see on picture after complete install video how install i upload on youtube in next time ... LINK WHERE YOU BUY is here : http://www.ebay.com/itm/CNC-Aluminum-Bevel-Collar-Red-15mm-Diff-Shims-For-Axial-Yeti-XL-90032-AX90038-/131985991058?hash=item1ebafa6592:g:xcIAAOSwn7JYFBUI i recommended this if you want more protect your bevel gear thanks for tip Gordon Rislove Jr. thank you so much for your help brother :) Also you can see on two and third picture new bevel gear from Gpm Racing after tuning from Dhawk racing !! thank you all people which help me with this !!! Gpm Racing Gordon Rislove Jr. @dhawk racing thanks people for your unbelievable help thank you thank you thank you <3 i love you all !! Im so proud on all my friends and of course on my mother which help, me with build :-* http://www.gpmracing.com.hk/en/ if you need some help with build or something you feel free and contact i very like help you :) note : install was so easy ... nothing complicated ( write review in english language ) #axial #gpmracing #dhawkracing #bestparts #sponsor #protect #bevelgear #thanks #support #awesome #thankfull #hongkong #hapiness #lovethistime #sophisticated #slovakia #boys #proud #mom