The Ohlins TR644 STX 36 Blackline shock pair is a rear twin-shock package designed for Triumph Bonneville T100, Bonneville T120 and Street Scrambler models. Built around Ohlins’ STX architecture, it’s intended to improve chassis control and ride quality while suiting classic-style builds. Adjustment is provided so the setup can be matched to rider load and road conditions.

Ohlins | Made to race, perfected to ride

Ohlins suspension is developed with a focus on damping control, consistency and tuneability. The STX 36 Blackline family combines modern internals with a dark, understated finish suited to heritage motorcycles.

Who this shock is for

  • Riders looking to add control and composure to a twin-shock Triumph on real-world roads.
  • Owners who want external adjusters to tailor feel for solo riding, luggage or a passenger.
  • Builders chasing a blacked-out shock look without stepping away from a classic silhouette.

Shock design & features

This is a rear twin-shock pair using the Ohlins STX 36 platform. It uses an emulsion-type damping layout (oil and gas in the same body), packaged for the compact proportions typical of twin-shock fitments.

Tuning controls

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

Before you install

  • Confirm the application matches your exact model and year within the Bonneville T100/T120 and Street Scrambler range.
  • Set sag and preload for your typical riding load before making damping changes.
  • After installation, re-check fasteners and clearances through full suspension travel.

Serviceability/lifecycle

Like all performance dampers, these shocks are designed to be serviced to maintain consistent damping over time. Periodic oil and seal service helps keep performance stable, particularly with frequent riding or harsh conditions.

SKU TR644
Model # S36ER1L (B)
Barcode # TR644
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 Twin
Shock Length Eye to Eye (mm) 348.0 +7/-3
Spring Rate Standard 16.0 - 26.0 N/mm Progressive
Type Code S36ER1L (B)
Stroke Metal to Metal (mm) 96.0
Product Family STX 36 Blackline
Fitted Spring 60480-02
Spring Colour Black
Rec. Ohlins Oil 01309-

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