Italian 2 stroke Shark Fins

Discussion in 'Zip Ty Racing' started by Huskynoobee, Mar 29, 2017.

  1. Huskynoobee CH Sponsor ZipTy Racing

    Location:
    Castaic, CA
    Husqvarna Motorcycle:
    2011 TE449 2006 WR250
    Other Motorcycles:
    HDUltra Classic IT200 YZ250 SV650s
    Thanks to an inquiry by one of our CH folks, I asked about the left side brake 2 stroke Italian CR/WR Shark Fins whilst at ZIP-TY HQ. Ty said there should be some left, so we went and found them. Here's a pic I shot of one the other day.

    These will work on any of the 2 strokes with 25mm axles.
    20170327_164355.jpg
    454x likes this.
  2. Huskynoobee CH Sponsor ZipTy Racing

    Location:
    Castaic, CA
    Husqvarna Motorcycle:
    2011 TE449 2006 WR250
    Other Motorcycles:
    HDUltra Classic IT200 YZ250 SV650s
    This Shark Fin is not just for protection, this is a major brake upgrade for your Italian Stallion. This unit allows you to use the larger rear rotor from later 4 stroke bikes for increased power and no fade. As you can see these take a lot of abuse on my WR250.
    20170329_082317.jpg
  3. Huskynoobee CH Sponsor ZipTy Racing

    Location:
    Castaic, CA
    Husqvarna Motorcycle:
    2011 TE449 2006 WR250
    Other Motorcycles:
    HDUltra Classic IT200 YZ250 SV650s
    Here's the deal. The part# is SF129 and the price is $130.00. Don't forget your Cafe Husky member discount code.

    You will need to order this brake rotor from Bills or Halls along with the special bolts - your stock rotor bolts will not work with this rotor.
    20170329_082502.jpg
    The part # is 8A00H4977 and is for 250/310 and 449/511 Husqvarna 4 strokes.
    NCSteve likes this.
  4. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    I really can't justify one of these but they do look cool!
    Huskynoobee likes this.
  5. 87husky500xc Husqvarna
    Pro Class

    Location:
    Dayton NV
    Husqvarna Motorcycle:
    15 te300 and 6 others
    Other Motorcycles:
    77 honda xr-75..
    I bet there is a few Italian riders out there that'll appreciate the extra leg work noobee. If I had an Italian I'd buy one for sure!
    Huskynoobee likes this.
  6. Huskynoobee CH Sponsor ZipTy Racing

    Location:
    Castaic, CA
    Husqvarna Motorcycle:
    2011 TE449 2006 WR250
    Other Motorcycles:
    HDUltra Classic IT200 YZ250 SV650s
    Sure you can! You are good for 2 and then I'm sure you can find some blokes who need one. We'll ship 'em together to save on cost.
    shawbagga likes this.
  7. 87husky500xc Husqvarna
    Pro Class

    Location:
    Dayton NV
    Husqvarna Motorcycle:
    15 te300 and 6 others
    Other Motorcycles:
    77 honda xr-75..
    Anything can be justified shawbagga. It's a matter of how badly it needs justification haha
    shawbagga likes this.
  8. 268fords Husqvarna
    Pro Class

    Location:
    Napa, California
    Husqvarna Motorcycle:
    08' TE510'
    Other Motorcycles:
    Honda CRF 100, CRF 50, KLX 110
    If the 2 stroke rotors have a floating design like the 4 strokes, you will need to add a thin washer between the rotor and the hub to center the rotor. Otherwise your new rotor will rub the caliper. I ran into that a few months ago when I changed my rotors from the stock ones on my 510. Nice find on the shark fins.
  9. Trenchcoat85 Husqvarna
    Pro Class

    Location:
    Northern NorCal
    Husqvarna Motorcycle:
    '14 TE 310R
    Other Motorcycles:
    '85 shovel, '75 DT400, '97 XR400
    hey 268fords (this is scott, I'm the guy who told you about the redheads using "Braking" wave rotors):

    I always kinda wondered about the thin washer/shim thing....
    are you sure your caliper halves are free to move? 'cause I would've guessed that your old floating rotor and the new wave rotor would have had the same center- No?

    I mean, I agree- the piston is moving; but the other half of the caliper should also be able to move too (and find the center).

    make sure both components are free to move. lube the caliper pins. you may be able to take the washers out now.

    let us know what is what.
  10. Huskynoobee CH Sponsor ZipTy Racing

    Location:
    Castaic, CA
    Husqvarna Motorcycle:
    2011 TE449 2006 WR250
    Other Motorcycles:
    HDUltra Classic IT200 YZ250 SV650s
    The 2 strokes don't have this problem. Bolt it up and rip! FWIW, I run a 19" 2012 CR 125 rear on my 449 to take advantage of some of the excellent tires such as the Dunlop MX52. The rotor is a direct fit with no mods.
  11. 268fords Husqvarna
    Pro Class

    Location:
    Napa, California
    Husqvarna Motorcycle:
    08' TE510'
    Other Motorcycles:
    Honda CRF 100, CRF 50, KLX 110
    The caliper moves perfectly. The problem I encountered was the new bolts made the disk sit flush against the hub, vs being spaced off of it with the old floating mounts. The rotor was rubbing the inside of the caliper more than the outside. You could push the caliper over, but it wanted to move back to center.
    IMG_0332.JPG this is the old rotor. You can see that it doesn't allow the rotor to mount against the hub. It keeps it off of it around 1/16".
    IMG_0330.JPG this is the new rotor spaced out to match the original.
    IMG_0333.JPG side by side
    Spinning the tire by hand without the washers installed was creating a drag. If I pushed on the caliper, it wouldn't drag. The rotors have the same center, just the way it mounted was slightly different. IMG_0334.JPG
    Trenchcoat85 likes this.
  12. Trenchcoat85 Husqvarna
    Pro Class

    Location:
    Northern NorCal
    Husqvarna Motorcycle:
    '14 TE 310R
    Other Motorcycles:
    '85 shovel, '75 DT400, '97 XR400
    Good pictures. thanks.

    yeah, my wave rotor sits flush on the hub too. I wonder if our hubs are different? ...or maybe the calipers are not the same? When you pushed to caliper inboard, what do you think it was forcing it back out (1/16")?

    And nice fat pads you got there too- should last you a while.

    thanks for the detailed report.
    268fords likes this.
  13. 268fords Husqvarna
    Pro Class

    Location:
    Napa, California
    Husqvarna Motorcycle:
    08' TE510'
    Other Motorcycles:
    Honda CRF 100, CRF 50, KLX 110
    I'm not sure what was bringing the caliper back out. It just had this sweet spot where it wanted to be at. I'm not sure if husky changed the hubs or not before the end of the italians.
  14. Huskynoobee CH Sponsor ZipTy Racing

    Location:
    Castaic, CA
    Husqvarna Motorcycle:
    2011 TE449 2006 WR250
    Other Motorcycles:
    HDUltra Classic IT200 YZ250 SV650s
  15. ajaxauto Husqvarna
    Pro Class

    I can assure you that they work If I can win 2 National # 1 AMA Hare and Hounds and be a 5 time KOM and 7 Time LDS racer and never hurt my fin Then you know it works As for Huskynobee picture that is the one on my old bike and it is still working great
    Huskynoobee and Trenchcoat85 like this.
  16. Trenchcoat85 Husqvarna
    Pro Class

    Location:
    Northern NorCal
    Husqvarna Motorcycle:
    '14 TE 310R
    Other Motorcycles:
    '85 shovel, '75 DT400, '97 XR400
    well, since it's your old bike John, let me ask you what that little nubbin' is protruding from the center of the axle? I'm guessing an axle pull?
  17. Huskynoobee CH Sponsor ZipTy Racing

    Location:
    Castaic, CA
    Husqvarna Motorcycle:
    2011 TE449 2006 WR250
    Other Motorcycles:
    HDUltra Classic IT200 YZ250 SV650s
    That's a weld from an axle pull.
  18. ajaxauto Husqvarna
    Pro Class

    When I would race my WR it had the small brake I would over heat it to the point of no brakes So going to the Zip Ty Shark fin let me run the bigger rotor which is the same as all the other Husky Never had a problem again It is a bolt on deal well worth the money
    Huskynoobee likes this.