A single-pivot rear suspension carries the rear axle on a swingarm that rotates around one fixed pivot on the front triangle. The axle follows a circular arc centered on that pivot. Extra links may drive the shock without changing this basic axle path.
Quick Facts
- Defining feature: the rear axle stays a fixed distance from one main frame pivot
- Axle path: a circular arc relative to the front triangle
- Shock arrangements: direct actuation or linkage-driven
- High-pivot versions: can combine a rearward axle path with an idler pulley
- Examples: Orange Five Evo, Starling Murmur and Deviate Claymore
How to Identify One
Follow the member carrying the rear axle toward the front triangle. If it rotates around one fixed frame pivot without another moving joint between that pivot and the axle, the axle has a single-pivot path.
Counting every visible bearing can be misleading. A rocker or seatstay link may move the shock while the axle remains on the same swingarm. A pivot above the rear axle therefore does not, by itself, make the suspension a Horst Link.
Check the specific frame generation. A manufacturer can use different suspension layouts across its range or replace a layout while keeping a familiar model name. COMMENCAL’s META V5 uses a virtual-pivot system, and its SUPREME DH V5 uses a six-bar high virtual-pivot system; neither should be classified from older META or SUPREME designs.
Direct and Linkage-Driven Shocks
With direct actuation, the shock connects the swingarm to the front triangle. Shock position and mounting geometry determine how much the shock compresses for each increment of wheel movement.
A linkage-driven single pivot adds a mechanism between the swingarm and shock. This gives the designer more freedom to shape the leverage curve while retaining a fixed-pivot axle path. It also adds joints and bearings to service.
Direct actuation does not guarantee a linear or regressive leverage curve. Orange describes the Five Evo’s single-pivot frame as progressive. Deviate uses a linkage to create progression on the Claymore. The actual curve and approved shock matter more than the layout’s name.
Pivot Position and the Drivetrain
The main pivot establishes the center of the axle’s arc. Whether the axle moves rearward, forward or changes direction through the usable travel depends on where it starts relative to that pivot. Every single pivot does not share the same path.
A high fixed pivot can create substantial rearward movement and rear-center growth. Deviate routes the chain over an upper idler on the Claymore to manage drivetrain feedback. Idler position also influences anti-squat, so an idler should not be described as making the drivetrain and suspension completely independent.
Pedaling response cannot be inferred from pivot height alone. Chain routing, gearing, wheel dimensions, suspension position and rider mass assumptions all affect the calculated behavior.
Braking and Ride Feel
Rear-brake forces interact with the suspension through the brake mount and linkage geometry. That interaction is described by anti-rise. It is not accurate to assume that every single pivot extends, locks or feels harsh whenever the rear brake is applied.
The layout also does not establish a performance tier. Shock tune, spring rate, leverage curve, geometry and maintenance can make two single-pivot bikes feel quite different. Use the manufacturer’s kinematic information and the bike’s intended use when comparing designs.
What to Check on a Used Bike
A direct-actuation design can have fewer suspension joints than a linkage-driven alternative, but it still needs inspection. For a used example, check:
- Main-pivot play, bearing condition and available replacement hardware
- Shock size, mounting hardware and the frame’s approved shock options
- Extra linkage bearings on a linkage-driven version
- Idler teeth, bearings and chain guides on a high-pivot version
- The frame generation, rather than the model name alone
Manufacturer service instructions provide the relevant torque values and service procedures. A simple-looking frame is not a reason to substitute generic settings.