The Ohlins BM645 STX 46 Street rear shock is designed as a direct-fit rear mono shock for BMW R nineT Scrambler and R nineT Urban G/S models. Built around Ohlins road-focused damping architecture, it targets improved chassis control, grip and consistency across everyday riding and spirited road use. The design uses a pressurised gas system to help maintain stable damping behaviour as conditions change.

Ohlins | Made to race, perfected to ride

Ohlins STX Street products carry design cues from the brand’s competition programs, adapted for road motorcycles. The focus is predictable damping response and clear feedback, with adjustment ranges intended to be practical for real-world riding.

Who this shock is for

  • BMW R nineT Scrambler and R nineT Urban G/S riders wanting more control and consistency from the rear end
  • Owners carrying varying loads or riding styles who need external adjustability to suit conditions
  • Riders looking to refine ride quality and stability without changing the bike’s core character

Shock design & features

This is a gas-pressurised, oil/gas separated rear shock rather than an emulsion layout. It uses an external piggyback reservoir to support consistent damping performance, with valving intended to balance comfort, control and traction for street use.

Tuning controls

  • Rebound damping adjustment
  • Compression damping adjustment
  • Hydraulic spring preload adjustment for convenient load and ride-height compensation

Before you install

Confirm compatibility with the listed BMW models and ensure the shock is fitted in the rear mono position as intended. After installation, set sag and revisit damping settings after a short bedding-in ride so the adjustments reflect your typical load, tyre choice and road conditions.

Serviceability/lifecycle

Like other Ohlins units, this shock is designed to be serviced and reconditioned to maintain performance over time. Periodic inspection and servicing helps keep damping consistent and extends component life, particularly when the bike sees frequent wet, dusty or high-load use.

SKU BM645
Model # S46PR1C1LB
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) 374.0 +7/-5
Spring Rate Standard 160.0 N/mm
Type Code S46PR1C1LB
Stroke Metal to Metal (mm) 52.5
Product Family STX 46 Street
Fitted Spring: 01092-64
Spring Colour Yellow
Rec. Ohlins Oil 01309-

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