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#help #suspension #yfz450 2008 2008yfz450 2017 yamaha yfz 450r 450 450r a arms aftermarket airbox ais delete backfiring battery battery issue best coilovers big 3 big bore bog carb carb conversion chain clutch coolant crank cranks wont fire up dasa ecu efi efi tunning electric issue electrical problem engine exhaust fci fci yfz450r fourwerx fuel controller fuel injected fuel programmer full exhaust graphics gytr help help please high compression high idle hmf intake jetting leak maintainance mapping maps msd msd blaster need help nerf bars new owner no spark no start oil parts parts review pros & cons pros and cons quad racing atv rebuild rev speed rossier sand dunes shocks sprocket stalling starting starting problem stroker stroker kit throttle transmission trinity tune tune yfz450r tuning vortex vortex ecu wiring wont start yfz yfz 2015 yfz 450 2004 yfz 450 2005 yfz 450r yfz450 yfz450 help yfz450 problems yfz450 tuning yfz450r yfz450r se
  1. YFZ Powertrain
    Do you guys recommend the rossier or dasa exhaust? I plan on getting RPRACE intake and throttle body with vortex ecu. Possibly head work and valves. Thanks for all opinions.
    dasa exhaust rossier yfz450r
  2. EFI YFZ DYNO's
    Wondering if anyone has any recommendations for a PCV map for a 2020 with Rossier RS5 full exhaust and GYTR Billet/Air Filter Setup. Having some stalling issues when slowing down and applying clutch lever, as well as some mild backfiring. I am not sure if this is related, but also hitting rev...
    pcv rossier

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    rossier xfr

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    rossier

  5. 2020 YFZ450RSE Neon Yellow / Midnight Blue

    -Precision Elite Stabilizer -Vortex X10 ECU (Duncan Maps) -Rossier R4 Full Exhaust with Anti-Reversion Header -Odi Flight Bars -Odi Lock Grips -Pro Taper Bar Pad -Pro Taper Clutch Perch -Pro Taper 39T Steel Rear Sproket -Reflex Brake Lever -Rox 2 Inch Adjustable Risers -PowerMadd Handguards -38...
    duncan odi precision rossier vortex
  6. YFZ450 & YFZ450R General Talk
    So I’m going to call KB this week to put in my Big 3 order. Doing the FCI and vortex. Just stuck on which exhaust to get. Looking hard at Yoshi RS2, Rossier and barkers. Input guys?
    2013 exhaust big 3 rossier yfz 450r
  7. YFZ450 & YFZ450R General Talk
    Any input on why the dasa exhaust is not as good on the EFI yfz? And why the yoshi and barkers is the most recommended? Thanks!
    450r barker big 3 dasa rossier
  8. YFZ450 & YFZ450R General Talk
    Any reviews on the Rossier exhaust for the yfz450r? Think I’m gonna go order one this week
    big 3 exhaust rossier vortex
  9. EFI Quads
    Selling my 2014 450R. Asking $6000. Was purchased new by my close friend, and I have every receipt for all the parts (also purchased new). Quad has been meticulously cared for, and overall has very low use for it’s age. Oil/filter/air filter has been changed every 2-4 rides. Is turn-key and...
    floats fox hiper orange rossier
  10. Maintenance
    Hi gang, I saw a post on here about how to repack a Rossier Engineering exhaust. Unfortunately none of the pictures in the description show up. Do any of you guys/gals have pictures of this? Thanks, TG
    repack rossier
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