Yep. Bicyclerollingresistance.com should be independent, as should TOUR, where that chart is from. And I read somewhere that Tom Anhalt, another independent tester, had measured Bon Jon Pass to have a lot bigger resistance than gp4000, but who knows if that's valid.
Yep. Bicyclerollingresistance.com should be independent, as should TOUR, where that chart is from. And I read somewhere that Tom Anhalt, another independent tester, had measured Bon Jon Pass to have a lot bigger resistance than gp4000, but who knows if that's valid.