The Ohlins BM180 STX 46 Blackline rear shock is designed for the BMW R18, combining classic Blackline aesthetics with modern damping control. It’s built to improve stability and ride comfort without losing the character of a big-capacity cruiser. This unit is intended as a direct-fit rear shock solution for street use.

Ohlins | Made to race, perfected to ride

Ohlins suspension is developed from a consistent engineering approach: controlled damping, predictable response, and long-term serviceability. The STX platform is aimed at real-world road performance, where compliance and stability matter as much as support under load.

Shock design & features

This is an STX 46 Blackline rear shock with an oil/gas separated architecture to help maintain damping consistency over varied road conditions. The Blackline finish suits heritage and custom builds while keeping the focus on functional suspension performance.

Tuning controls

  • Rebound damping adjustment to manage how quickly the rear returns after a bump
  • Spring preload adjustment to suit rider weight, luggage, and ride height preference

Who this shock is for

  • BMW R18 riders wanting more control and comfort from the rear suspension on the street
  • Owners building a classic or custom look who still want a modern, tuneable shock
  • Riders who value a suspension unit that can be adjusted and serviced rather than replaced

Before you install

Check overall condition of mounting hardware and bushes during installation, and ensure the spring preload is set for correct sag before fine-tuning rebound. After fitting, re-check fasteners and clearances once the bike has been cycled through full suspension travel.

Serviceability/lifecycle

As an Ohlins rear shock, the BM180 is designed to be maintained with periodic servicing to keep damping performance consistent over time. Regular inspection for leaks, bushing wear, and any change in damping feel will help you plan service intervals before performance degrades.

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 BM180
Model # S46DR1LS (B)
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
Shock Length Eye to Eye (mm) 390.5
Spring Rate Standard 95.0 N/mm
Type Code S46DR1LS (B)
Stroke Metal to Metal (mm) 51.5
Product Family STX 46 Blackline
Fitted Spring 21103-31

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