V2 ATRA Speed Reducer sli We recommend the S2 for

We recommend the S2 for most conditions and it tends to do best on harder tracks and older snow

SM 165-190mm

For all snow conditions

Seatpost:Roadmachine Premium Carbon D-Shaped Seatpost

They are perfect cross country skiing

V2 ATRA Speed Reducer sli We recommend the S2 forThe ATRA (Advanced Training Resistance Aluminum) Speed Reducer has a machined aluminum bearing retainer for the best heat dissipation and strength. The lever actuated system has one neutral and four resistance positions that are easy to engage, whether for increasing resistance or for slowing the skis down when negotiating moderate downhills. Sold in pairs, it mounts to the front of each roller ski. For steep terrain, we recommend the use of a brake.