The Ohlins BM146 TTX 36/TTX 39 Adventure rear shock is built for BMW R 1200 GS K50 and R 1250 GS models used in adventure and touring conditions. It is designed to deliver consistent damping control across mixed surfaces and changing loads. This unit is configured as a gas-separated design to help maintain damping stability over long rides.

Ohlins | Made to race, perfected to ride

Ohlins Adventure shocks are engineered to balance support, comfort and control for real-world riding. The focus is predictable chassis behaviour and repeatable adjustment, whether you are commuting, touring, or riding unsealed roads.

Who this shock is for

  • BMW GS riders wanting more controlled damping for adventure and touring use
  • Riders carrying luggage or a pillion and needing added support and stability
  • Owners who want external adjustability for changing road and load conditions

Shock design & features

  • Rear mono shock for BMW R 1200 GS (K50) and R 1250 GS fitment
  • Gas-separated architecture for more consistent performance under sustained use
  • Adventure-focused construction intended for rough surfaces and long-distance riding

Tuning controls

  • Rebound damping adjustment
  • Compression damping adjustment
  • Hydraulic preload adjustment

Before you install

  • Confirm model and year compatibility for BMW R 1200 GS K50 and R 1250 GS, and note this unit is listed for rear fitment (water cooled)
  • Check spring part number supplied: 01103-54 (yellow)
  • After installation, set sag and then fine-tune damping to suit your load and riding conditions

Serviceability/lifecycle

This Ohlins unit is serviceable and intended to be maintained so performance remains consistent over time. Regular inspection and periodic servicing are recommended, particularly if the bike is used in dusty, wet, or heavily loaded conditions.

SKU BM146
Model # T39PR1C1S
Barcode # BM146
Brand Ohlins
Shipping Weight 5.0000kg
Shipping Size 0.300 x 0.300 x 0.500m
Type Units
See our Shipping Information See our Frequently Asked Questions
Position (Front or Rear) Rear Mono
Shock Length Eye to Eye (mm) 402.5
Spring Rate Standard 140.0 N/mm
Type Code T39PR1C1S
Stroke Metal to Metal (mm) 75.0
Product Family TTX 36/TTX 39 Adventure
Notes Rear Water cooled
Fitted Spring: 01103-54
Spring Colour Yellow
Rec. Ohlins Oil 01309-

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