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

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

-15°C (23°

It provides the most warming (lowest airflow) and is for low- to medium-intensity exercise and people with asthma or angina who suffer from breathing cold air

lowest resistance

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.