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2-Stroke Machines

This forum is for the discussion of all GP machines including 125's, 250's 500's etc...

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  1. JTRC51

    CR500- Road Race bike

    JTRC51, Aug 31, 2015 ... 15 16 17
    Replies:
    326
    Views:
    72,641
    BeanEater
    Apr 7, 2025
  2. infinityreplica

    2007 HRC 4 stroke now available!!

    infinityreplica, Mar 14, 2007 ... 8 9 10
    Replies:
    186
    Views:
    39,917
    Dreamah
    Oct 30, 2007
  3. rytrcng

    Suzuji RGV-250 (Lucky Strike) Pics and Question

    rytrcng, Jan 6, 2009 ... 17 18 19
    Replies:
    372
    Views:
    39,451
    charles
    Jun 26, 2011
  4. cgordon3

    500 GP Bikes

    cgordon3, Oct 16, 2005 ... 5 6 7
    Replies:
    127
    Views:
    25,278
    Steve C
    Jul 2, 2008
  5. killerofangels

    Dirt bike engines in GP bikes?

    killerofangels, Apr 26, 2011 ... 6 7 8
    Replies:
    157
    Views:
    19,686
    bEeR
    Oct 21, 2011
  6. infinityreplica

    New 2009 Teen Challenge Series

    infinityreplica, Nov 30, 2008 ... 6 7 8
    Replies:
    153
    Views:
    17,585
    RepliChallenge
    Sep 17, 2009
  7. XRACER510

    Cr 500 supermoto/roadrace

    XRACER510, Aug 13, 2009 ... 2 3 4
    Replies:
    65
    Views:
    16,726
    erichsoncycles
    Sep 27, 2010
  8. THIRTY4

    This is a Test.....

    THIRTY4, Dec 26, 2011 ... 9 10 11
    Replies:
    202
    Views:
    15,972
    Robin172
    Feb 4, 2012
  9. definitely not a cat

    Is a RS125 still worth it?

    definitely not a cat, Aug 31, 2020 ... 4 5 6
    Replies:
    110
    Views:
    15,947
    mastermind
    Jan 22, 2021
  10. Rad625

    2000 tz125 2002 tz 250

    Rad625, Jul 11, 2009 ... 2 3
    Replies:
    58
    Views:
    13,596
    Rad625
    Jul 7, 2010
  11. infinityreplica

    Moriwaki VS Aprilia 125 ...which is better?

    infinityreplica, Jan 14, 2009 ... 3 4 5
    Replies:
    98
    Views:
    11,522
    sanfret
    Apr 24, 2009
  12. Hotfoot

    YSR 80 engine?

    Hotfoot, Feb 1, 2010 ... 2
    Replies:
    20
    Views:
    11,147
    stickboy274
    Feb 9, 2010
  13. Mike Fennell

    Messing with my Aprilia Cup

    Mike Fennell, Apr 19, 2024 ... 5 6 7
    Replies:
    139
    Views:
    10,599
    Mike Fennell
    Jul 5, 2025 at 7:57 AM
  14. wicked1

    Rz 500/ Yzr 500 replica

    wicked1, Feb 2, 2011 ... 2 3 4
    Replies:
    76
    Views:
    10,100
    MotoXer311
    Feb 10, 2011
  15. Tom7

    RGV250 Carburation Problem? Where to start?

    Tom7, Mar 21, 2012 ... 2
    Replies:
    29
    Views:
    10,047
    Tom7
    Mar 29, 2012
  16. 50Joe

    Aprilia RS250 Cup bike

    50Joe, Apr 24, 2014 ... 2 3
    Replies:
    46
    Views:
    9,880
    Gino230
    Jan 26, 2016
  17. rohorn

    2 stroke design/simulation software . . . ?

    rohorn, Jun 23, 2015
    Replies:
    10
    Views:
    9,694
    mattology
    Jul 20, 2015
  18. Kurlon

    Cutting out at sustained high RPM

    Kurlon, Aug 27, 2017 ... 2
    Replies:
    33
    Views:
    9,352
    Kurlon
    Sep 3, 2017
  19. Yamanatic

    1974 Yamaha TZ750 For Sale - Unrestored, Mint Original

    Yamanatic, Jan 25, 2024 ... 2 3
    Replies:
    45
    Views:
    9,226
    Sweatypants
    Mar 5, 2024
  20. rpj

    1989 Kawasaki KR-1

    rpj, Sep 28, 2010 ... 2 3 4
    Replies:
    66
    Views:
    9,196
    rpj
    Feb 25, 2011
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