RC10B4.1 FT/WC
Tech Addict
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Tech Master
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really depends on how much boost..... I was running a 24/81 with my boosted 13.5. But, my boost setting might not = yours.
Tech Master
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Anyone know the size of the larger screw for the JC hex? I used some from a friend and they worked like a champ but he wasn't sure what the size was.
Tech Master
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2x6mm for the screw I believe
Tech Elite
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13.5 boosted.... 75/30
jc hex longer screw... m2x6
jc hex longer screw... m2x6
For the RPM bumper it sticks out about an 1/4 inch farther than stock, absorbs more of impact and is great for making small ruts in jumps...
Last edited by umm winning; 07-13-2012 at 10:41 PM.
I was 20/84 with timing/boost but it was with a Viper and those suckers have power
Tech Initiate
Hey wildcat-
Havent seen the bumper inaction but could be cool. However I agree with Jmuck I would be concerned what the bumler does if I land with too much pitch down....it could dig in and make things worse. I experienced this with the RPM bumper for my SC10 so i took it off.
Havent seen the bumper inaction but could be cool. However I agree with Jmuck I would be concerned what the bumler does if I land with too much pitch down....it could dig in and make things worse. I experienced this with the RPM bumper for my SC10 so i took it off.
I am at the track now. Indoor high bite. Need the rear to rotate more. Mkre or less shims on the rear camber
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Tech Elite
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Tech Master
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More will free the rear end up and should do what you are looking for. Also if you are running the C plates you could go back to the stock A plates, that would also free the rear end up.
Tech Regular
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The RPM bumper sticks out 1/4 of an inch further than the stock bumper, and doesn't extend past the front tires even when you press the chassis all the way to the ground. It's at least twice as thick, and curves upward sharply enough that you'd be hard-pressed to snag it on anything. My local track is jump city, and I've never snagged. It's secured to the bulkhead by 4 screws, not 2, so it won't strip out.
I've used it ever since the stock one broke by one of the screws and haven't had to think about replacing it. Frankly, the stock "bumper" is a joke. This should be stock.