XC light flywheel update
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Thread: XC light flywheel update

  1. #21
    Senior Member KTMATVHQ Member
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    Awesome! thanks kiwi
    2008 ktm 525xc: 95mm CP 13:1 piston, 41mm carb, 807 cam, +1 Kimblewhite valves, Racers Edge porting, FMF exhaust with powerbomb, SX intake, Crank Works Balanced Crank, DJH pressure feed for right main bearing and cup for left main bearing, mino hiflow water pump, All 4 Racing A-arms, LSR Axle, Rocket Ron Suspension

    My 2014 Sponsors:
    GPS Offroad Products, Elka Suspension, Risk Racing, Twin Air, Lonestar Racing, GoPro

  2. #22
    Senior Member KTMATVHQ Guru
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    ive been looking for days for that billet cover, with no luck.

    also what would be a downside to using the sx-f flywheel and rotor vs the sx flywheel and rotor? i seem to be finding it hard to find the sx one and easier to find the sx-f one.
    2009 KTM 525XC #841

    Brad Mulvey Mod SX arms, SX axle, SX brake lines, KTM Big Nerfs, KTM Hood, Motoworks SR4 slip on, akro manifold, ESR heat gauge, 42mm bored carb, hrc kit, YFZ float bowl w/ adjustable leak jet, FCI "like" Intake w/ RC-5000 K&N filter.

  3. #23
    Administrator KTMATVHQ Guru
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    sxf is lighter and fractionally shorter, might not fully cover the windings ?

    billet, there is a co in the UK still making them SFB. otherwise just get a stock SX cover from KTM, $40 brand new.......

    KTM SX SXF 400 450 525 (2000-2006) SFB Racing GOLD Billet Ignition Cover | eBay

    KTM SX SXF 400 450 525 (2000-2006) SFB Racing GOLD Billet Ignition Cover | eBay
    KTM 505 SX: Web cams / 13.5:1 custom CP / balanced and modded crank / custom Vortex X10 ignition / Ported head / 43.5mm billet centre bored carb / KTM Akrapovic muffler / Mino hi vol water pump / 12 deg flexx's / houser stem / elka 5 / PEP PB1's and PEP LT rear / Walsh Flow A Arms / Quad tech seat & Foam / CF nose / FCI intake / relocated batt box / KTM Bill header / KTM factory SS Oil Pump setup / Manual cam chain tensioner Next round of mods: oil cooler........ the NEW TOP DOG 114 hrs…. best race engine I've owned

    KTM 554 XC
    : sx style crank, light weight SXF flywheel, TT sxf stator, steel linered cylinder, custom JE piston ceramic coating, plus 1 ported head / 807 cam, 43.5mm carb. Mino hi vol water pump. KTM Bill custom exhaust, FCI intake, JB A Arms, PEP PB1s front LT and rear , Lonestar axle, 12 deg Flexx's, CF nose, elka 3 steering damper, KTM factory nerfs, factory white plastic and graphics / gell cell battery Next round of mods: oil cooler........

    gotta stop spending $$$ on these KTM's...…..

    Polaris Outlaw 525 IRS - 2011
    , lonestar plus 2 A Arms, cut MXR front shocks (minus 1 ") with ZPS / ttripple rate, FUJ rear suspension rear shock mount units drops ride height 2", FUJ HD adj sway bar, 1.5” rear billet wheel spacers, Polaris nerfs, bumper and rear rack, Yoshi competition slip on, Pro Taper bars, acerbis hand guards, Trailtech GPS with billet protector. KTM throttle / Honda Front master cylinder and shorty lever / 41mm carb & hi flow intake runner / big filter / Billet FCR transition ring. Modified rear spring package / rear revalve.

    next round of mods: 8/33 cam, Hi Flow water pump and 540 cylinder / wossner piston waiting to go in, fastway 3 steering damper ala KTM setup, custom header using KTM XC header as a starting piece, light flywheel setup.
    gotta have something to modify this year !

    LTR 450
    , My Wife Nicola's ride & my back up mxer - 493 BB / JE piston / special order Yoshi motard cams / custom fueling map / tcs LT ZPS front end setup, TCS rear ZPS revalve / ims tank / TB exhaust / power commander / proflo - K&N / 14 deg flexx's / race nerfs / armadillo bumper/ Denton damper, next round of mods: ported head and carillo rod...... the clark kent of the ATV trio ! 210 hrs and still going strong ! the BB kit transformed this machine, it hauls the mail now !!!!

    A garage full of wheels and tires for them all........ speedway / sand / MX / cross country, over 30 at last count all on rims ready to rock

    NZ # 1 Vets champ 2013
    NZ Vets (40+) North Island MX champ 08, 09, 12 & 13
    NZ TT champ Vets (40+) 06, 08, 09,12 & 13
    Auckland ATV Club Sprint Series Champ 04, 05, 06, 07, 08, 09, 11, 12 & 13
    hope to get a good season in for the remainder of 2014.......finding time to ride being the biggest problem !

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  5. #24
    Super Moderator KTMATVHQ Guru

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    I have bought stuff off him before and he's very helpful. If anyone needs assistance then let me know if you need stuff purchased and sent your direction.

  6. #25
    Super Moderator KTMATVHQ Guru

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    photo of how the gold looks compared to orange.

  7. #26
    Member Rookie
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    What did you do to keep the clutch from slipping

  8. #27
    Administrator KTMATVHQ Guru
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    KTM SX Stator cover Part No 59030002500

    get the matching gasket 59030040000

    you need these two of the little spacers to get the trigger coil in the right place 59039009000

    TT regulator unit is part no 7003-RR150 $60 http://www.trailtech.net/7004-RR150.html i used the earlier version which didn't have the adjustable relay, no longer available it seems

    TT stator is S-8360-05 $145 http://www.trailtech.net/S-8360-05.html
    KTM 505 SX: Web cams / 13.5:1 custom CP / balanced and modded crank / custom Vortex X10 ignition / Ported head / 43.5mm billet centre bored carb / KTM Akrapovic muffler / Mino hi vol water pump / 12 deg flexx's / houser stem / elka 5 / PEP PB1's and PEP LT rear / Walsh Flow A Arms / Quad tech seat & Foam / CF nose / FCI intake / relocated batt box / KTM Bill header / KTM factory SS Oil Pump setup / Manual cam chain tensioner Next round of mods: oil cooler........ the NEW TOP DOG 114 hrs…. best race engine I've owned

    KTM 554 XC
    : sx style crank, light weight SXF flywheel, TT sxf stator, steel linered cylinder, custom JE piston ceramic coating, plus 1 ported head / 807 cam, 43.5mm carb. Mino hi vol water pump. KTM Bill custom exhaust, FCI intake, JB A Arms, PEP PB1s front LT and rear , Lonestar axle, 12 deg Flexx's, CF nose, elka 3 steering damper, KTM factory nerfs, factory white plastic and graphics / gell cell battery Next round of mods: oil cooler........

    gotta stop spending $$$ on these KTM's...…..

    Polaris Outlaw 525 IRS - 2011
    , lonestar plus 2 A Arms, cut MXR front shocks (minus 1 ") with ZPS / ttripple rate, FUJ rear suspension rear shock mount units drops ride height 2", FUJ HD adj sway bar, 1.5” rear billet wheel spacers, Polaris nerfs, bumper and rear rack, Yoshi competition slip on, Pro Taper bars, acerbis hand guards, Trailtech GPS with billet protector. KTM throttle / Honda Front master cylinder and shorty lever / 41mm carb & hi flow intake runner / big filter / Billet FCR transition ring. Modified rear spring package / rear revalve.

    next round of mods: 8/33 cam, Hi Flow water pump and 540 cylinder / wossner piston waiting to go in, fastway 3 steering damper ala KTM setup, custom header using KTM XC header as a starting piece, light flywheel setup.
    gotta have something to modify this year !

    LTR 450
    , My Wife Nicola's ride & my back up mxer - 493 BB / JE piston / special order Yoshi motard cams / custom fueling map / tcs LT ZPS front end setup, TCS rear ZPS revalve / ims tank / TB exhaust / power commander / proflo - K&N / 14 deg flexx's / race nerfs / armadillo bumper/ Denton damper, next round of mods: ported head and carillo rod...... the clark kent of the ATV trio ! 210 hrs and still going strong ! the BB kit transformed this machine, it hauls the mail now !!!!

    A garage full of wheels and tires for them all........ speedway / sand / MX / cross country, over 30 at last count all on rims ready to rock

    NZ # 1 Vets champ 2013
    NZ Vets (40+) North Island MX champ 08, 09, 12 & 13
    NZ TT champ Vets (40+) 06, 08, 09,12 & 13
    Auckland ATV Club Sprint Series Champ 04, 05, 06, 07, 08, 09, 11, 12 & 13
    hope to get a good season in for the remainder of 2014.......finding time to ride being the biggest problem !

  9. #28
    Senior Member KTMATVHQ Guru
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    1,020
    got the flywheel orded. just gotta get the rest of it together.

    so let me get this straight cause i have never done a light flywheel swap to anything before. this mod doesnot give extra hp. but it builds power faster correct? which means it should accelerate faster off the line and burst out of corners faster??
    2009 KTM 525XC #841

    Brad Mulvey Mod SX arms, SX axle, SX brake lines, KTM Big Nerfs, KTM Hood, Motoworks SR4 slip on, akro manifold, ESR heat gauge, 42mm bored carb, hrc kit, YFZ float bowl w/ adjustable leak jet, FCI "like" Intake w/ RC-5000 K&N filter.

  10. #29
    Administrator KTMATVHQ Guru
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    you got it, large diameter flywheel takes energy to accelerate, slow the engine response, theory was it make it tractor through stuff, nice for the enduro two wheelers I guess........ most of the pro two wheeler guys went for SX type setups as they valued the response and had the skills to use it.......
    KTM 505 SX: Web cams / 13.5:1 custom CP / balanced and modded crank / custom Vortex X10 ignition / Ported head / 43.5mm billet centre bored carb / KTM Akrapovic muffler / Mino hi vol water pump / 12 deg flexx's / houser stem / elka 5 / PEP PB1's and PEP LT rear / Walsh Flow A Arms / Quad tech seat & Foam / CF nose / FCI intake / relocated batt box / KTM Bill header / KTM factory SS Oil Pump setup / Manual cam chain tensioner Next round of mods: oil cooler........ the NEW TOP DOG 114 hrs…. best race engine I've owned

    KTM 554 XC
    : sx style crank, light weight SXF flywheel, TT sxf stator, steel linered cylinder, custom JE piston ceramic coating, plus 1 ported head / 807 cam, 43.5mm carb. Mino hi vol water pump. KTM Bill custom exhaust, FCI intake, JB A Arms, PEP PB1s front LT and rear , Lonestar axle, 12 deg Flexx's, CF nose, elka 3 steering damper, KTM factory nerfs, factory white plastic and graphics / gell cell battery Next round of mods: oil cooler........

    gotta stop spending $$$ on these KTM's...…..

    Polaris Outlaw 525 IRS - 2011
    , lonestar plus 2 A Arms, cut MXR front shocks (minus 1 ") with ZPS / ttripple rate, FUJ rear suspension rear shock mount units drops ride height 2", FUJ HD adj sway bar, 1.5” rear billet wheel spacers, Polaris nerfs, bumper and rear rack, Yoshi competition slip on, Pro Taper bars, acerbis hand guards, Trailtech GPS with billet protector. KTM throttle / Honda Front master cylinder and shorty lever / 41mm carb & hi flow intake runner / big filter / Billet FCR transition ring. Modified rear spring package / rear revalve.

    next round of mods: 8/33 cam, Hi Flow water pump and 540 cylinder / wossner piston waiting to go in, fastway 3 steering damper ala KTM setup, custom header using KTM XC header as a starting piece, light flywheel setup.
    gotta have something to modify this year !

    LTR 450
    , My Wife Nicola's ride & my back up mxer - 493 BB / JE piston / special order Yoshi motard cams / custom fueling map / tcs LT ZPS front end setup, TCS rear ZPS revalve / ims tank / TB exhaust / power commander / proflo - K&N / 14 deg flexx's / race nerfs / armadillo bumper/ Denton damper, next round of mods: ported head and carillo rod...... the clark kent of the ATV trio ! 210 hrs and still going strong ! the BB kit transformed this machine, it hauls the mail now !!!!

    A garage full of wheels and tires for them all........ speedway / sand / MX / cross country, over 30 at last count all on rims ready to rock

    NZ # 1 Vets champ 2013
    NZ Vets (40+) North Island MX champ 08, 09, 12 & 13
    NZ TT champ Vets (40+) 06, 08, 09,12 & 13
    Auckland ATV Club Sprint Series Champ 04, 05, 06, 07, 08, 09, 11, 12 & 13
    hope to get a good season in for the remainder of 2014.......finding time to ride being the biggest problem !

  11. #30
    Senior Member KTMATVHQ Guru
    Join Date
    Jun 2010
    Posts
    1,020
    kiwi - which regulator/rectifier are u using?? i see there are 2 different part numbers on this thread.
    2009 KTM 525XC #841

    Brad Mulvey Mod SX arms, SX axle, SX brake lines, KTM Big Nerfs, KTM Hood, Motoworks SR4 slip on, akro manifold, ESR heat gauge, 42mm bored carb, hrc kit, YFZ float bowl w/ adjustable leak jet, FCI "like" Intake w/ RC-5000 K&N filter.

  12. #31
    Administrator KTMATVHQ Guru
    Join Date
    Feb 2008
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    The 7003 -RR150 seems to be superceded by the 7004-RR150. If you punch into the 7003 part number it redirects you to the new 7004 part. Worth asking TT about it.
    KTM 505 SX: Web cams / 13.5:1 custom CP / balanced and modded crank / custom Vortex X10 ignition / Ported head / 43.5mm billet centre bored carb / KTM Akrapovic muffler / Mino hi vol water pump / 12 deg flexx's / houser stem / elka 5 / PEP PB1's and PEP LT rear / Walsh Flow A Arms / Quad tech seat & Foam / CF nose / FCI intake / relocated batt box / KTM Bill header / KTM factory SS Oil Pump setup / Manual cam chain tensioner Next round of mods: oil cooler........ the NEW TOP DOG 114 hrs…. best race engine I've owned

    KTM 554 XC
    : sx style crank, light weight SXF flywheel, TT sxf stator, steel linered cylinder, custom JE piston ceramic coating, plus 1 ported head / 807 cam, 43.5mm carb. Mino hi vol water pump. KTM Bill custom exhaust, FCI intake, JB A Arms, PEP PB1s front LT and rear , Lonestar axle, 12 deg Flexx's, CF nose, elka 3 steering damper, KTM factory nerfs, factory white plastic and graphics / gell cell battery Next round of mods: oil cooler........

    gotta stop spending $$$ on these KTM's...…..

    Polaris Outlaw 525 IRS - 2011
    , lonestar plus 2 A Arms, cut MXR front shocks (minus 1 ") with ZPS / ttripple rate, FUJ rear suspension rear shock mount units drops ride height 2", FUJ HD adj sway bar, 1.5” rear billet wheel spacers, Polaris nerfs, bumper and rear rack, Yoshi competition slip on, Pro Taper bars, acerbis hand guards, Trailtech GPS with billet protector. KTM throttle / Honda Front master cylinder and shorty lever / 41mm carb & hi flow intake runner / big filter / Billet FCR transition ring. Modified rear spring package / rear revalve.

    next round of mods: 8/33 cam, Hi Flow water pump and 540 cylinder / wossner piston waiting to go in, fastway 3 steering damper ala KTM setup, custom header using KTM XC header as a starting piece, light flywheel setup.
    gotta have something to modify this year !

    LTR 450
    , My Wife Nicola's ride & my back up mxer - 493 BB / JE piston / special order Yoshi motard cams / custom fueling map / tcs LT ZPS front end setup, TCS rear ZPS revalve / ims tank / TB exhaust / power commander / proflo - K&N / 14 deg flexx's / race nerfs / armadillo bumper/ Denton damper, next round of mods: ported head and carillo rod...... the clark kent of the ATV trio ! 210 hrs and still going strong ! the BB kit transformed this machine, it hauls the mail now !!!!

    A garage full of wheels and tires for them all........ speedway / sand / MX / cross country, over 30 at last count all on rims ready to rock

    NZ # 1 Vets champ 2013
    NZ Vets (40+) North Island MX champ 08, 09, 12 & 13
    NZ TT champ Vets (40+) 06, 08, 09,12 & 13
    Auckland ATV Club Sprint Series Champ 04, 05, 06, 07, 08, 09, 11, 12 & 13
    hope to get a good season in for the remainder of 2014.......finding time to ride being the biggest problem !

  13. #32
    Senior Member KTMATVHQ Guru
    Join Date
    Jun 2010
    Posts
    1,020
    yep contacted trailtech and they said the exact same thing. its just an upgraded model from the old one. it has an extra wire for a delay also.
    2009 KTM 525XC #841

    Brad Mulvey Mod SX arms, SX axle, SX brake lines, KTM Big Nerfs, KTM Hood, Motoworks SR4 slip on, akro manifold, ESR heat gauge, 42mm bored carb, hrc kit, YFZ float bowl w/ adjustable leak jet, FCI "like" Intake w/ RC-5000 K&N filter.

  14. #33
    Senior Member Member
    Join Date
    Jan 2013
    Location
    Newport va
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    217
    Update on this mod.Works awesome as kiwi stated very responsive with the throttle now. Thanks kiwi you are a genius!

  15. #34
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    Plainfield. IN
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    Craig,
    Is the KTM SX Stator cover Part No 59030002500 the orange anodized in your first photos?



  16. #35
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    Mar 2011
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    Sydney, Australia
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    Maybe a dumb question but could i just machine down the stock flywheel to make it lighter assuming its machines square and even and only on the outside would it not still work or am i missing something i get the mechanical side if having a lightened flywheel but not the electrical so long as i still have full cover over the stator wouldn't i be making the same electrical power as before. And did you replace the ignition cover just for the look or was it required. And lastly which of the flywheels did you think was the best option.
    Last edited by kaleb_t; 11-22-2013 at 11:05 PM.

  17. #36
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    New Zealand
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    Kaleb, the stator will not fit into the smaller flywheel.
    You gotta see the 2 parts side by side & then you will realise how what you're asking just won't work.
    My Bikes:The Beast: Raptor660727cc (105mm piston 14.5:1 CR)3 plug HV ported headDual Kehin FCR39 carbsCustom made full dual exhaustThe Beauty: KTM450XC554 (99mm bore) with Cut7 cam & 43mm carbSX A-Arms & Yamaha Front rimsDual rate rear springs (Thanks Kiwicraig)Rear Spacers to adapt to Yamaha stud patternMods to come:Suspension nextThe SledgehammerSuzuki TL1000SOhlins rear/Racetech kitted forks

  18. #37
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    I can see that by the pics at the start the lighter flywheel is physically smaller so the the stator wont fit inside. But what im asking is can i machine the outside of the flywheel so theoretically the inside (I.D) of the flywheel doesnt change and im basically just thing out the wall of the flywheel to reduce the weight.

  19. #38
    Administrator KTMATVHQ Guru
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    no, guys have tried that, the flywheels tend to fail - crack and or go out of round........ the weight saving is minimal and not worth the effort or the risk.
    KTM 505 SX: Web cams / 13.5:1 custom CP / balanced and modded crank / custom Vortex X10 ignition / Ported head / 43.5mm billet centre bored carb / KTM Akrapovic muffler / Mino hi vol water pump / 12 deg flexx's / houser stem / elka 5 / PEP PB1's and PEP LT rear / Walsh Flow A Arms / Quad tech seat & Foam / CF nose / FCI intake / relocated batt box / KTM Bill header / KTM factory SS Oil Pump setup / Manual cam chain tensioner Next round of mods: oil cooler........ the NEW TOP DOG 114 hrs…. best race engine I've owned

    KTM 554 XC
    : sx style crank, light weight SXF flywheel, TT sxf stator, steel linered cylinder, custom JE piston ceramic coating, plus 1 ported head / 807 cam, 43.5mm carb. Mino hi vol water pump. KTM Bill custom exhaust, FCI intake, JB A Arms, PEP PB1s front LT and rear , Lonestar axle, 12 deg Flexx's, CF nose, elka 3 steering damper, KTM factory nerfs, factory white plastic and graphics / gell cell battery Next round of mods: oil cooler........

    gotta stop spending $$$ on these KTM's...…..

    Polaris Outlaw 525 IRS - 2011
    , lonestar plus 2 A Arms, cut MXR front shocks (minus 1 ") with ZPS / ttripple rate, FUJ rear suspension rear shock mount units drops ride height 2", FUJ HD adj sway bar, 1.5” rear billet wheel spacers, Polaris nerfs, bumper and rear rack, Yoshi competition slip on, Pro Taper bars, acerbis hand guards, Trailtech GPS with billet protector. KTM throttle / Honda Front master cylinder and shorty lever / 41mm carb & hi flow intake runner / big filter / Billet FCR transition ring. Modified rear spring package / rear revalve.

    next round of mods: 8/33 cam, Hi Flow water pump and 540 cylinder / wossner piston waiting to go in, fastway 3 steering damper ala KTM setup, custom header using KTM XC header as a starting piece, light flywheel setup.
    gotta have something to modify this year !

    LTR 450
    , My Wife Nicola's ride & my back up mxer - 493 BB / JE piston / special order Yoshi motard cams / custom fueling map / tcs LT ZPS front end setup, TCS rear ZPS revalve / ims tank / TB exhaust / power commander / proflo - K&N / 14 deg flexx's / race nerfs / armadillo bumper/ Denton damper, next round of mods: ported head and carillo rod...... the clark kent of the ATV trio ! 210 hrs and still going strong ! the BB kit transformed this machine, it hauls the mail now !!!!

    A garage full of wheels and tires for them all........ speedway / sand / MX / cross country, over 30 at last count all on rims ready to rock

    NZ # 1 Vets champ 2013
    NZ Vets (40+) North Island MX champ 08, 09, 12 & 13
    NZ TT champ Vets (40+) 06, 08, 09,12 & 13
    Auckland ATV Club Sprint Series Champ 04, 05, 06, 07, 08, 09, 11, 12 & 13
    hope to get a good season in for the remainder of 2014.......finding time to ride being the biggest problem !

  20. #39
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    Ok thanks kiwi thats all i wanted to know.

  21. #40
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    Im doing this too. Got my stator and rec. from Trail Tech today. Flywheel coming off Ebay.


 
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