- cleat belt instead chain ( it was tested some years ago in bikes ) - maguras with water recommended ( without seals problems ) - antysnake gas/talk system - freewheels with 500 engagements without making sounds ( like old LX Silent Clutch ) - different material of rim walls - no need to grind it all the time. It should be sharp for months, not 4 weeks - single front tube in frame for sure.