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  1. 2019 Gorman Big6 race

    2019 Gorman Big6 race

    Photos taken by Joe Salas, his instagram: 4theriders
  2. Why kicker conversion?

    Engine
    Alright, I’m new here everyone. I see a lot of people doing a kicker conversion to the ER bikes. Especially those building race rigs. My question is why convert to kicker? Also why use 04/05 gear ratios versus 06+? I am going to build a WORCS rig so I’m trying to use as much experience and...
  3. Crf450r crank in Trx450r engine??

    TRX450R.org Project Quads
    I would like to know if a crf450r crank and piston would fit in my 2005 Trx450r. I can’t find a trx450 crankshaft for sale but I found a crf450 one and wanted to know if it’ll fit inside the engine. Please get back to me. Thank you.
  4. 2005 Trx450r locked up

    Engine
    Hi, I’m new here and I need help. I have an 05 Trx450r that recently locked up on me and I would just like to know if a crf450r crank and piston would fit inside like trx450 engine. Please get back to me. Thank you all.
  5. Drag build questions

    Engine
    So I have a 2007 trx450er I've been building slowly over the last year to drag race on dirt and play with around the house getting ready to go to a 520 bigbore non stroker 14:1 piston and a race ported head im stuck on cams id like to go with stage 3 hot cams but not really trying to replace...
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