OSSA

840 topics in this forum

1. Which Model Is Closest To The Mar

   By yellow_cad, August 29, 2012
   • 2 replies
   • 2.1k views
   • 
   • chuckindenver
   • November 14, 2012
2. 
   

3. ossa conrods

   By kenww, October 2, 2010
   • 2 replies
   • 2.1k views
   • 
   • kenww
   • October 3, 2010

4. Mar engine weight

   By rocker1, May 18, 2019
   • 4 replies
   • 2.1k views
   • 
   • pmk
   • May 21, 2019

5. Please Help Find My Tr77 Spark - Its Disappeared!

   By t20racerman, December 28, 2016
   • 6 replies
   • 2k views
   • 
   • dadof2
   • December 29, 2016

6. Lever will not disengage clutch

   By yellow_cad, November 6, 2011
   • 2 replies
   • 2k views
   • 
   • zerorev3rev4
   • November 6, 2011

7. For The Vintage And Modern Riders

   By borus, August 28, 2010
   • 2 replies
   • 2k views
   • 
   • monty_jon
   • August 28, 2010

8. Engine install (modern OSSA)

   By lotus54, January 5, 2018
   • 3 replies
   • 2k views
   • 
   • lotus54
   • January 5, 2018

9. Tr280 Frame Material?

   By wayne509, February 19, 2014
   • 5 replies
   • 2k views
   • 
   • wayne509
   • February 20, 2014

10. Tr280 countershaft sprocket

    By bfaucett, July 22, 2018
    • 5 replies
    • 2k views
    • 
    • canada280i
    • July 24, 2018

11. Chain Tensioner Spring

    By africanjon, June 7, 2016
    • 6 replies
    • 2k views
    • 
    • africanjon
    • June 10, 2016

12. TR77 Gearbox issue

    By rick_watts, August 14, 2022
    • 7 replies
    • 2k views
    • 
    • rick_watts
    • August 16, 2022

13. Another Ossa Question Help Please

    By shercoben12, November 15, 2014
    • 7 replies
    • 2k views
    • 
    • 2stroke4stroke
    • November 16, 2014

14. Ossa Tr77 Chain Tensioner ?

    By trialsrfun, January 3, 2014
    • 6 replies
    • 2k views
    • 
    • woody
    • January 5, 2014

15. Question About The Differences Between Years.

    By dabbs, October 8, 2014
    • 1 reply
    • 2k views
    • 
    • onlyembo
    • October 8, 2014

16. Ossa 250 Mar Crank/gearbox Shims

    By solway19, April 9, 2014
    • 3 replies
    • 2k views
    • 
    • trialsrfun
    • April 10, 2014

17. Ossa Front Hub Identification

    By jc2, November 12, 2015
    • 4 replies
    • 2k views
    • 
    • jc2
    • November 13, 2015

18. Ossa Mar Cylinder

    By longlegscanbeuseful, March 6, 2015
    • 1 reply
    • 2k views
    • 
    • twinshock giles
    • March 6, 2015

19. Upper Shock Mount 280

    By ric h, March 8, 2014
    • 5 replies
    • 2k views
    • 
    • ric h
    • March 9, 2014

20. ossa tri 2013 rebuild engine runs with resistance

    By Paulfromholland, November 21, 2021
    • 5 replies
    • 2k views
    • 
    • Paulfromholland
    • November 24, 2021

21. Wiring A Kill Switch On An Mar

    By old trials fanatic, January 6, 2016
    • 2 replies
    • 2k views
    • 
    • old trials fanatic
    • January 7, 2016