The Ohlins BM423 STX 46 Adventure rear shock is built for the BMW F 650 Funduro, focusing on control and consistency when conditions get rough. It is intended to improve stability and comfort across long days, including corrugations and rocky climbs. Designed for adventure and touring use, it supports confidence and reduced rider fatigue on uneven surfaces.

Ohlins | Made to race, perfected to ride

Ohlins suspension is developed with a strong engineering focus on damping quality, durability and tuneability. For adventure riding, that means predictable behaviour over changing surfaces and load conditions. The STX 46 Adventure family targets real-world compliance without losing composure.

Who this shock is for

• BMW F 650 Funduro riders who spend time on gravel, corrugations and broken backroads
• Adventure and touring riders seeking steadier chassis control over long distances
• Riders carrying luggage or occasionally riding with a pillion and wanting more stability

Shock design & features

This is a rear mono shock with a monotube-style architecture and an external reservoir for oil/gas separation to support damping consistency under demanding use. The STX 46 Adventure layout is aimed at maintaining composure when the shock is working hard, while keeping feedback clear at the tyre contact patch. Built for harsh conditions, it is designed to handle repeated impacts and sustained rough terrain.

Tuning controls

The BM423 includes external damping adjustment for rebound and compression, allowing you to tailor feel for terrain and load. It also includes spring preload adjustment to help set the bike’s ride height and balance for solo riding, luggage, or a pillion. These adjustments are intended to be practical for quick changes without disassembly.

Before you install

• Confirm fitment for BMW F 650 Funduro and check clearance with any accessories fitted to the bike
• Set spring preload to suit your typical load, then fine-tune rebound and compression to preference
• After initial installation, re-check fasteners and settings once everything has bedded in

Serviceability/lifecycle

This Ohlins rear shock is serviceable and designed to be maintained over its working life. Periodic servicing helps keep damping performance consistent, especially for bikes used on dirt, in wet conditions, or over long-distance touring.