Shock Absorber Type 644 WESA Dynamic Rear Lift/Lowering:-50 mm Thanks to an additional gas

Thanks to an additional gas spring that stiffens with load

Unlike standard emulsion shocks where gas and oil mix

The Tracker cartridges come with external adjustment for spring preload

The stock setup offers slightly too little negative spring travel

Shock Absorber Type 644 WESA Dynamic Rear Lift/Lowering:-50 mm Thanks to an additional gasWESA Dynamic for BMW R 1300 GS (sport suspension) more comfort, more control, more safety Building on BMWs semi active platform, our WESA Dynamic upgrade enhances comfort and control while preserving the GS character: Noticeably more comfort compared with stock Typical GS ride quality just as you know and love it Optional additional lowering of 20 or 50 mm perfect for smaller riders Our quality promise: 5 year warranty on WESA Includes ABE (general