The 910 are slow and replicate skiing on snow. See. Roller ski study in Sweden. The 920 are medium slow and the 930 are medium speed. The rolling resistance in the 910 free wheels is increased using our patented ISR (internal speed reducer) that weighs only 10 grams. The wheel forks with the built in fenders use the same strong Du Pont™ composite material that we have employed on the V2-900 series for many years.
Weight / pair: 1805 grams
Wheel Dimensions: 70 X 40mm wide.
Rubber composition: Highly abrasion resistant rubber with a durometer of 82 shore A.
Bolts: Stainless steel 6X1X55mm and 6X1X65mm grade 12-9 steel bolt.
Optional Speed Reducer: ATRQ900
Optional Brake: BXLQ900