KTM 450 xc, 662 ccm, 41mm, KTMBill, 74 HP!!!
Results 1 to 7 of 7
Like Tree1Likes
  • 1 Post By Alex_Austria

Thread: KTM 450 xc, 662 ccm, 41mm, KTMBill, 74 HP!!!

  1. #1
    Junior Member Rookie
    Join Date
    Jan 2016
    Posts
    5

    KTM 450 xc, 662 ccm, 41mm, KTMBill, 74 HP!!!

    KTM 450 XC with a 662 Big Bore Kit, Keihin 41 mm, KTMBill

    74 HP!!!

    Tuning by Frauenschuh Tuning Austria.

    ::: FRAUENSCHUH-Tuning :::Homepage

    KTM 450 xc, 662 ccm, 41mm, KTMBill, 74 HP!!!-ktm662.jpg
    polarisrider150 likes this.

  2. #2
    Senior Member KTMATVHQ Guru
    Join Date
    Dec 2008
    Location
    Billings, MT
    Posts
    1,056
    Who's engine kit and what porting, valve size, and cam are you running with it? Stock intake?
    Mine:
    2017 Husky FX 450
    2009 505 SX
    2008 525 XC-modded for mx (currently 450 cylinder)
    Dad's:
    2009 450 SX
    2008 540 XC

  3. #3
    Junior Member Rookie
    Join Date
    Jan 2016
    Posts
    5
    KTM 450 xc, 662 ccm, 41mm, KTMBill, 74 HP!!!-imgp0172.jpg

  4. Remove Advertisements
    KTMATVHQ.com
    Advertisements
     

  5. #4
    Junior Member Rookie
    Join Date
    Jan 2016
    Posts
    5
    KTM 450 xc, 662 ccm, 41mm, KTMBill, 74 HP!!!-imgp0170.jpg

  6. #5
    Senior Member KTMATVHQ Addict
    Join Date
    Aug 2009
    Posts
    661
    Awesome!
    2008 KTM 450xc
    Thumper 540 kit with CP piston at 12.5 compression, 8/33 cam, High Flow water pump, SX seat, SX a-arms and Rath hubs rear, SX intake, 14/37 gearing, Hiper wheels, Gafer brake lines, dash delete. SX pipe
    2009 Can Am Renegade 800


  7. #6
    Junior Member Rookie
    Join Date
    Feb 2018
    Posts
    17
    Can someone explain what the 660 kit is about...how easy is it to install...do any other mods have to happen...timing..how much is it...and what's the power difference
    Thanks

  8. #7
    Senior Member KTMATVHQ Guru
    Join Date
    Dec 2008
    Location
    Billings, MT
    Posts
    1,056
    My guess is very large bore (likely need to machine cases to fit sleeve) and custom stroker crank. To make it run right IMO would take a different cam, porting, larger valves, bored carb, and exhaust. Very involved build and when you get to those stages with an engine they come with high maintenance programs. Depending on dynos, a stock 450XC probably makes 40ish hp.
    Mine:
    2017 Husky FX 450
    2009 505 SX
    2008 525 XC-modded for mx (currently 450 cylinder)
    Dad's:
    2009 450 SX
    2008 540 XC


 

Sponsored Links

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Search tags for this page

ktm frauenschuh

Click on a term to search for related topics.