The Ohlins BM677 TTX 36/TTX 39 Adventure front shock is built for the BMW R 1200 GS where control and consistency matter across mixed surfaces. Designed around Ohlins’ TTX architecture, it focuses on predictable damping and stable chassis behaviour under changing loads. It is supplied as a front mono shock for adventure and touring use.

Ohlins | Made to race, perfected to ride

Ohlins suspension is developed with a strong engineering focus on damping control, heat management and repeatable adjustment. The TTX 36/TTX 39 Adventure family is aimed at riders who want confidence and composure when conditions vary from smooth bitumen to rough tracks.

Who this shock is for

  • BMW R 1200 GS riders wanting improved front-end control for adventure and touring.
  • Riders who regularly deal with uneven surfaces and want a more settled feel through the bars.
  • Anyone looking for a serviceable, tuneable front mono shock rather than a sealed replacement.

Shock design & features

This is a TTX-series unit with oil and gas separated for consistent damping performance. The twin-tube layout helps maintain control over long rides by supporting stable oil flow and damping response. It is configured as a dedicated front shock for the application noted.

Tuning controls

The BM677 is fitted with external damping adjusters for quick set-up changes. It provides adjustment for rebound damping and compression damping, allowing you to balance comfort, support and control to suit terrain, tyres and load.

Before you install

Confirm the fitment notes and mounting position (front mono) match your BMW R 1200 GS configuration before installation. If you’re changing load or ride style from standard, spring choice and baseline settings should be checked during install to ensure the front geometry and feel remain balanced.

Serviceability & lifecycle

As an Ohlins unit, the BM677 is designed to be maintained with regular servicing to keep performance consistent. Use the recommended Ohlins oil specified for the product when servicing, and refresh seals and fluid as part of normal suspension upkeep.

SKU BM677
Model # T36PR1C1
Barcode # BM677
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) Front Mono
Shock Length Eye to Eye (mm) 340.0
Spring Rate Standard 50.0 N/mm
Type Code T36PR1C1
Stroke Metal to Metal (mm) 90.5
Product Family TTX 36/TTX 39 Adventure
Notes Front
Fitted Spring: 21067-09
Spring Colour Yellow
Rec. Ohlins Oil 01309-

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