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.

Öhlins Motorcycle Suspension Warranty

New Öhlins motorcycle shock absorbers, front forks and cartridge kits supplied by Teknik Motorsport are covered by the applicable Öhlins manufacturer’s warranty against defects in materials and workmanship.

Teknik Motorsport is an authorised Öhlins Service Centre and administers warranty claims in accordance with the Öhlins warranty conditions. The service intervals below form part of the maintenance requirements for Öhlins products supplied and supported by Teknik Motorsport.

This warranty is in addition to the consumer guarantees that apply under the Australian Consumer Law.

  • Registered motorcycles — non-competition road use Five years, subject to correct application, installation, setup and servicing every: 20,000 km or two years, whichever occurs first.
  • Registered motorcycles — adventure and light off-road use Five years, subject to correct application, spring rate, setup and servicing every: 10,000 km or annually, whichever occurs first.
  • Unregistered or competition motorcycles Two years for eligible Öhlins MX and Enduro products, subject to inspection every ten hours and servicing every: 30 operating hours or annually, whichever occurs first.

Compliance with the applicable service interval is a condition of the Öhlins manufacturer’s warranty. Evidence of servicing may be required when a warranty claim is assessed.

A seal leak, loss of damping performance or internal wear arising after the prescribed service interval has been exceeded will be treated as a service or maintenance issue rather than a manufacturing defect.

Warranty repairs

Öhlins suspension products are designed to be serviced and repaired. Where a warranty claim is approved, the normal remedy is repair of the customer’s original suspension unit using genuine Öhlins replacement parts.

Replacement of a complete shock absorber, fork or cartridge kit is not automatic and would normally occur only where the product has suffered a manufacturing failure that cannot reasonably be repaired. This is at Ohlins discretion. 

Öhlins spare parts and service kits

Öhlins spare parts, seals, bushes, service kits, springs, fluids and individual components are covered only against defects present when supplied.

No fixed age-based warranty applies to wear items, service parts or consumable components. Wear, deterioration, contamination, incorrect installation and damage caused by another component are not manufacturing defects.

Öhlins gives the customer a meaningful five-year warranty on products (Units), provided the suspension is maintained as suspension should be maintained. Teknik supports that warranty locally, can inspect the product properly, and can repair it with genuine parts rather than discarding it.

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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