V2 ATR150XL Speed Reducer (pair) mag22 Optimal for cleaning the groove

Optimal for cleaning the groove of cross-country  and jump ski

The old Asthma filter has been replaced with the Sport filter for 2024

The Boulder Nordic Sport hot box plus service is a two-stage wax treatment that starts with a metal brushing of the ski to clean and remove any dead base material

The Race Filters are for high-intensity training and racing

V2 ATR150XL Speed Reducer (pair) mag22 Optimal for cleaning the grooveThe reducers are engaged with a lever and have one disengaged position and 4 levels of resistance (3 levels for 125) to provide options for adjusting training resistance or braking down hills. Sold individually, usually installed in pairs, but can be installed individually.