Wunderlich - Ergo+ Handlebar Riser for BMW R 1300 GS Supplier-Race-Tech or builder

or builder

and finally

The Wunderlich frame plugs also offer corrosion protection by preventing the build-up of dirt and moisture inside the frame tubes

move the tool along the negative side

your unit will do the rest

Wunderlich - Ergo+ Handlebar Riser for BMW R 1300 GS Supplier-Race-Tech or builderWunderlich Handlebar Riser ERGO+ relaxed riding, thanks to perfect handlebar ergonomics and visibility Function and Product Features Increases the handlebar height by approximately 38 mm and brings it 27 mm closer to the rider Relaxed, upright seating position for fatigue free riding Noticeable increase in comfort by relieving the entire musculoskeletal system Better handling combined with improved visibility and control More direct riding feel