Some info on Zipp wheels :-
http://weightweenies.starbike.com/phpBB ... =clinchers
1280g clinchers wheels :-
http://weightweenies.starbike.com/phpBB ... t+clincher
Also from weight weenies regarding lightest clincher rims:-
1. American Classic Magnesium 1200g (To be released in Jan)
2. Rolf Prima Elan 1314g (actual)
3. American Classic 350 1320g (standard build)
4. Campagnolo Ultra Hyperon 1350g
5. Extra lite ExtraClimb 1360g
6. Nimble Fly 1367g
7. Velomax Victoria 1370g (145lb recomended weight limit, to be released in Jan)
8. Wheel Craft Sprint DS 1370g ( Actual)
9. Ritchey WCS Protocal 1390g (to be released in Jan)
10. Campagnolo Hyperon 1395g
11. Nimble Spider 1400g
12. FSA (don't know model) 1400g (to be released in Jan)
13. Topolino 1413g (actual)
14. Velomax Ascent II 1423g (actual)
15. American Classic 420 1425g (standard build)
16. Rolf Prima Vigor 1467g (actual)
17. X-Lab Aero 1475g
18. Velomax Orion II 1477g
19. Extra Lite ExtraRoad 1480g
20. Reynolds Stratus Clincher 1490g (to be released in Jan)
21. Velomax Tempest II 1500g
22. Bontrager X-Lite 1520g
23. Tune Standard Lightweight 1530g
24. Spinergy Xaero Lite 1540g
25. Campagnolo Neutron 1550g
26. Spinergy Tilium Carbon 1557g (actual)
27. Mavic Ksyirum SSC SL TDF 1560g (actual)
28. Zipp 303 1575g
29. Dura Ace 7800 1579g
30. Mavic Ksyrium SSC SL 1590g (actual)
31. Spinergy Carbon SS 1599g
http://weightweenies.starbike.com/phpBB ... her+wheels