I got a new bike and evertime I jump the handlbars move either foreward or backward. i cleaned out the tons of grease that was in it and tightened the bars a ton and it still slips.
Re-grease it, put the stem back on and tighten the bolts as tight as you can go, and if you ever feel the need, bring an allen key to the park with you soif they move you can fix them there.
yeah is kinda difdficult to take off completely all of the grease inside the stem holes,your gonna have to clean it up more .then loctite,screw the bar good,and let it sit for the night,
maybe throw a shim shim in between the bars and the stem, that's what pplw ith regular bars and stems made for oversized bars do.
so maybe just a super thin shim? talk to your shop
k, i locktighted it and and the people at my shop hate anyone who doesnt road bike or xc mountain bike so its kinda hard to talk to them.
another thing was the back brakes arnt doing a lot, i want to take the front brakes off but if i do the back brakes wont be enough. i mainly do dirt jumps too