Suspension Talk

A simple guide to mountain bike rear suspension

TECH TALK

1/9/20264 min read

A simple guide to Mountain Bike Rear Suspension

Modern full-suspension mountain bikes use a variety of rear suspension platforms. While many look similar at a glance, the kinematics behind them differ significantly. Each system represents engineering trade-offs between pedaling efficiency, braking performance, bump absorption, weight, and maintenance.

Below are the main mainstream suspension types, along with their pros, cons, and a real-world example of each design.

1. Single Pivot

What It Is

A single pivot suspension uses one main pivot point located above and forward of the bottom bracket. The rear axle follows a simple arc around that pivot.

Best for: Riders who value durability and simplicity.

A single pivot uses one primary rotation point. It’s the most mechanically straightforward design, but braking forces can stiffen the suspension under heavy rear brake input.

Example

Orange Bikes – Orange Five
https://www.orangebikes.com/bikes/five

Pros

  • Mechanically simple

  • Durable and robust

  • Lower maintenance

  • Predictable suspension feel

Cons

  • Braking can stiffen suspension (brake jack)

  • Less independent control of pedaling forces

  • Limited axle path tuning

Ideal For

Riders who prioritize durability and simplicity over kinematic complexity.

2. Horst Link (Four-Bar with Chainstay Pivot)

What It Is

A four-bar linkage system with a pivot on the chainstay, just in front of the rear axle. This pivot helps isolate braking forces from suspension movement.

Best for: Trail and enduro riders wanting balanced performance.

By placing a pivot on the chainstay near the rear axle, braking forces are more isolated from suspension movement, improving traction on descents.

Example

Specialized – Stumpjumper
https://www.specialized.com/us/en/stumpjumper

Pros

  • Active suspension under braking

  • Highly tunable leverage curve

  • Balanced pedaling performance

  • Versatile design

Cons

  • More pivots = more bearings

  • Slightly heavier than single pivot

Ideal For

Trail and enduro riders wanting balanced all-around performance.

3. Linkage-Driven Single Pivot

What It Is

A single main pivot, but the shock is driven via linkages to allow better leverage curve tuning.

Best for: Riders who want simple axle behavior but modern shock progression.

The linkage allows engineers to tune the leverage curve while keeping the classic single pivot axle path.

Example

Transition Bikes – Sentinel
https://transitionbikes.com/Bikes_Sentinel.cfm

Pros

  • Simple axle path

  • Modern progressive shock curve

  • Good stiffness

Cons

  • Brake jack still present

  • Added linkage complexity

Ideal For

Riders who want simple suspension feel with modern shock performance.

4. DW-Link

What It Is

A dual short-link system developed by Dave Weagle, using counter-rotating links to control anti-squat and axle path.

Developed by Dave Weagle.

Best for: Technical climbers and aggressive trail riders.

Known for high anti-squat values, this design resists pedal bob while remaining active over bumps.

Example

Ibis Cycles – Ripmo
https://www.ibiscycles.com/bikes/ripmo

Pros

  • Excellent pedaling efficiency

  • Minimal pedal bob

  • Efficient climbing

  • Active braking performance

Cons

  • More complex

  • More bearings to maintain

Ideal For

Technical trail and enduro riders who value climbing performance.

5. VPP (Virtual Pivot Point)

What It Is

A dual-link system where the virtual pivot point moves throughout the suspension travel.

Developed by Santa Cruz Bicycles and Intense Cycles.

Best for: Aggressive trail and enduro use.

The virtual pivot changes location throughout travel, allowing engineers to fine-tune pedaling efficiency and mid-stroke support.

Example

Santa Cruz Bronson
https://www.santacruzbicycles.com/en-US/bikes/bronson

Pros

  • Strong pedaling platform

  • Good mid-stroke support

  • Highly tunable leverage curves

Cons

  • Bearing maintenance

  • Can feel firm if not tuned properly

Ideal For

Aggressive trail and enduro riding.

6. Maestro

What It Is

A dual-link suspension system developed by Giant Bicycles.

Best for: Versatile trail and XC riders.

Giant’s floating pivot layout balances pedaling efficiency with bump sensitivity.

Example

Giant Trance X
https://www.giant-bicycles.com/global/trance-x-advanced-pro-29-2024

Pros

  • Smooth small bump compliance

  • Efficient under pedaling

  • Balanced all-around ride feel

Cons

  • Multiple pivots to service

  • Brand-exclusive platform

Ideal For

Trail and XC riders wanting versatility.

7. ABP (Active Braking Pivot)

What It Is

A system where the rear pivot is concentric with the rear axle to maintain suspension activity while braking.

Developed by Trek Bicycle Corporation.

Best for: Riders descending steep terrain where braking control is critical.

By placing the pivot concentric with the axle, braking has less effect on suspension movement.

Example

Trek Slash
https://www.trekbikes.com/us/en_US/bikes/mountain-bikes/trail-mountain-bikes/slash/c/B581/

Pros

  • Active under braking

  • Stable descending feel

  • Improved traction

Cons

  • Added complexity

  • Slight weight increase

Ideal For

Enduro and downhill riders prioritizing braking control.

8. Split Pivot

What It Is

Designed by Dave Weagle, using a concentric dropout pivot to isolate braking forces.

Also designed by Dave Weagle.

Best for: Hard-charging enduro riders.

Offers braking neutrality similar to Horst Link with refined anti-squat characteristics.

Example

Devinci Cycles – Spartan
https://www.devinci.com/en/bikes/mountain/spartan/

Pros

  • Excellent braking neutrality

  • Strong pedaling characteristics

  • Durable under aggressive riding

Cons

  • More bearings

  • Licensing complexity

Ideal For

Hard-charging trail and enduro riders.

9. High Pivot

What It Is

A single pivot placed higher on the frame, often paired with an idler pulley to manage chain growth and pedal kickback.

Best for: Downhill and bike park riders.

A rearward axle path helps the wheel move backward over square-edge hits, improving high-speed stability and traction.

Example

Forbidden Bike Co – Dreadnought
https://forbiddenbike.com/bikes/dreadnought/

Pros

  • Rearward axle path

  • Excellent square-edge bump absorption

  • Extremely stable at speed

Cons

  • Added drivetrain drag

  • Increased weight

  • More maintenance

Ideal For

Downhill, bike park, and aggressive enduro riding.

10. Flex Stay (Pivotless)

What It Is

Uses engineered flex in the seatstays instead of a pivot near the rear axle.

Best for: XC racing and weight-conscious builds.

Instead of a physical pivot near the axle, the seatstays flex within engineered limits to allow travel while reducing bearings and weight.

Example

Cannondale – Scalpel
https://www.cannondale.com/en/bikes/mountain/cross-country/scalpel

Pros

  • Fewer bearings

  • Lighter weight

  • Reduced maintenance

  • Clean design

Cons

  • Limited travel range

  • Material fatigue considerations

Ideal For

XC riders prioritizing efficiency and low weight.

Final Thoughts

Every rear suspension system represents a compromise between:

  • Anti-squat (pedaling efficiency)

  • Anti-rise (braking neutrality)

  • Axle path

  • Leverage progression

  • Weight

  • Maintenance

Modern designs are extremely refined, and for most riders, geometry, shock tuning, and setup matter just as much if not more than the suspension type alone.

Modern full-suspension mountain bikes use a variety of rear suspension systems. While many look similar, their kinematics differ significantly.

Which Suspension Design Is Best?

There is no universally “best” system. The ideal choice depends on:

  • Riding style

  • Terrain

  • Maintenance tolerance

  • Weight priorities

  • Climbing vs descending focus

For most riders, modern geometry, shock tuning, and setup will influence ride feel just as much as suspension design.