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  1. Srxspec

    2008 Yamaha Apex Driveshaft Upgrade

    Micro completely closed down and is no longer. I’d have to find a new source and figure out what “microloy” really was.
  2. Srxspec

    Apex Oilite Bushing Kits & Steering Blocks

    Front end bushing kits & steering blocks are in stock! 2011-2018 model front end bushing kits here https://shop.ulmerracing.com/Oilite-Front-End-Bushing-Kit-detail.htm?productId=-3589547&browse=-70967&shopBy=-26776&catalogId=-11683 2011-2018 model steering block kits here...
  3. Srxspec

    stage 6 vs mod stock vs big turbo

    A ported head on a stock turbo won't do much, since you're already air flow restricted by the turbo.
  4. Srxspec

    Apex head porting?

    With the rev limiter removed, a stock Apex is capable of making the very broad horsepower from 10,000 all the way to 12,000 rpm. This is a stock exhaust, stock motor, etc sled, I did move the ignition timing around and move the rev limiter. But it made 159.5 at 10,000 rpm, a peak of 166.3 at...
  5. Srxspec

    Best front bushing kit??

    2011-2018 Kits (specific to the EPS) come with all bushings except two of the spindle bushings, these bushings very rarely show any wear and are very large (they'd add $60 to the kit price due to the cost of the material). In stock & available to ship...
  6. Srxspec

    2024 Yamaha Spring Power Surge

    750 total units….
  7. Srxspec

    Track rub on rear shock

    If you could take some measurements I can tell you if it will fit or not. How wide is the rear shock mount (outside of mount to outside of mount).
  8. Srxspec

    Who ordered?

    Tried to order but site locked up, put 5 names in on the waiting list hoping to get 1!
  9. Srxspec

    Kingers BOOSTED garage....

    @kinger maybe you should rename BOB to FLASH and you can have FLAME and FLASH!! Hope you get the bugs ironed out for next season!
  10. Srxspec

    2024 Yamaha snowmobile releases, March 14, 2023

    Rmax 1000 engine in a Catalyst chassis. 100+ hp, lighter, used across multiple lines (like the 998), could be a winner.
  11. Srxspec

    Kingers BOOSTED garage....

    GO have some fun SAFE riding hopefully!
  12. Srxspec

    Updated Driveshaft 8JP-G7511-10-00---metallurgy testing

    A ball bearing race is typically a 58 to 62 hardness on the Rockwell C scale.
  13. Srxspec

    2011+ Apex exhaust EXUP pipe options?

    Ulmer Racing does not have any more headers on hand and has no plans to build more. I built 50 of them in 2016 and it took 7 years to sell them all. I'm also sure that what cost $1200 then for retail price has probably at least doubled.
  14. Srxspec

    vector bulk head bushings

    Individual bushings can be purchased here. https://shop.ulmerracing.com/Oilite-Bushings-Individual-Replacement-detail.htm?productId=-6092782&shopBy=-26776&catalogId=-11683
  15. Srxspec

    Decals

    Same thing happened on the 2012 Vector we owned.
  16. Srxspec

    2017 Viper hard start

    I tore into the throttle body wire harness, but couldn't pin point a problem area or get it to start. I installed a new set of throttle bodies and it starts fine now (knock on wood).
  17. Srxspec

    sly dog wheel bearing size?

    6905RS
  18. Srxspec

    2017 Viper hard start

    So this morning I tried going back to the aftermarket starter and suddenly I have a no start condition. It's not the starter though, something, somewhere is causing the injectors not to fire. I have eliminated the GEMS unit and about everything I can think of. Just about ready to give up.....
  19. Srxspec

    2017 Viper hard start

    So I ended up swapping around map sensors on the fuel rail with a spare set that I had laying here, with the new sensors installed it fired up on the first click of the key!!! Now the confusing thing, I put the old ones back on and it will fire up on the first click of the key with the old ones...
  20. Srxspec

    2017 Viper hard start

    So on the one I'm working on I tried a new OEM starter, cranks over good, but still will not start when cold. If I spray carb clean in the intake (MPI turbo kit on it), it'll fire off and once it's warm, will start again every time, but when cold will not start. I have checked cam timing...


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