The Ohlins BM490 STX 46 Blackline rear shock is built for riders who want a more controlled, composed feel from their BMW R nineT while retaining the bike’s character. It combines Ohlins damping know-how with a classic Blackline finish suited to road and custom-focused builds. This unit is designed to deliver consistent support and clear feedback through the rear suspension.

Ohlins | Made to race, perfected to ride

Ohlins suspension is developed with a focus on damping control and ride consistency. The STX 46 Blackline range is aimed at road-going motorcycles where appearance matters, without compromising the quality of the internals.

Who this shock is for

  • BMW R nineT riders chasing improved stability and comfort on the street
  • Owners building a custom look who still want proper suspension performance
  • Riders who value adjustable tuning rather than a fixed, one-size setup

Shock design & features

This is an oil/gas separated rear mono shock design intended to maintain damping consistency as conditions change. The STX architecture supports controlled movement and traction-focused behaviour, helping the bike stay settled over varied road surfaces.

Tuning controls

  • Compression damping adjustment
  • Rebound damping adjustment
  • Spring preload adjustment

Before you install

Please note fitment limitations listed for this unit: it is not suitable for use with HIGH Akrapovic OE accessory exhaust, and it is not suitable for 2017-on bikes with Euro 4 (canister clearance). Confirm your exact model and configuration before installation.

Serviceability/lifecycle

As with other Ohlins rear shocks, this unit is intended to be maintained over time with periodic servicing to keep damping performance consistent. Regular inspection and service will help preserve ride quality and component life.

SKU BM490
Model # S46PR1C1L (B)
Barcode # BM490
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) 368.0
Spring Rate Standard 160.0 N/mm
Type Code S46PR1C1L (B)
Stroke Metal to Metal (mm) 46.0
Product Family STX 46 Blackline
Notes Not suitable for use with HIGH Acrapovic OE accessory exhaust. Not suitable for 2017- bikes with Euro 4 (Canister clearance).
Fitted Spring 21102-64
Spring Colour Black

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