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APS - Advanced Pivot System

Traction is Speed


More traction equals more speed, and that is what BMC is after.

The updated APS Suspension System features next-level kinematics and best-in-class suspension performance designed to deliver full traction and great efficiency on every terrain. Resulting in faster times, this new and improved full-feature suspension system finds no match on the race-course.

Advanced Pivot System – the best tool for the job

• Using APS, BMC engineers have access to a versatile suspension system with the ability to design complex kinematics that could not be achieved using weight-driven solutions like flex stays and single-pivot suspension systems.

• APS features a virtual rear suspension pivot trough the rear wheel travel, which is defined by upper and lower link and the resulting 4 pivots.

• APS allows BMC to fine-tune the suspension kinematics to provide an incredibly dynamic suspension behavior across the travel.


Uphill Traction:

The anti-squat tuning featured on Fourstroke decreases along the travel, preventing  chain growth when hitting obstacles; this allows the suspension to compress smoothly and track the terrain for perfect traction.

Once the suspension starts extending again, the anti-squat value rises to keep the wheel tracking the terrain, significantly increasing the grip.

Downhill Flow:

APS keeps the suspension active when the going gets tough by reducing pedal-kickback deep in the travel and preventing negative influences during braking.

Improved Suspension Progressivity:

The updated Fourstroke kinematics and all-new shock tune provide a progressive spring curve, delivering a superior ride experience in any riding situation.

• Small bump sensitivity

• Support in rough conditions

• Bottomless feeling

• More predictable airtime behavior

The Winning Edge

Extensive testing shows that the Fourstroke and APS suspension are faster than lighter bikes that feature weight-saving suspension systems, proving that superior traction and pedaling efficiency are more important than weight.


Kinematics: 1 Obstacles: 0

Designing a full-suspension platform is nothing short of rocket science – a balancing act between great pedalling efficiency, isolation of brake loads, small and big bump compliance, and playful handling. The Advanced Pivot System (APS), optimises pivot locations for ideal kinematics and results in purposeful leverage ratios, axle paths and shock performance characteristics. APS is a World-Champion-proven system capable of everything from cross-country racing to all-mountain ripping.

A well-designed full-suspension bike offers the control and confidence to ride any trail without hesitation. Traction, control and efficiency are top priorities with the APS. We use a series of simulation supercomputers to ensure each discipline of riding is given the perfect balance of performance metrics. We also believe it should be durable, tuneable for any rider and serviceable in a short amount of time. APS relies on two short links, moving in a concentric motion, to create a rear wheel axle path that promotes the perfect balance between ideal leverage ratio, fully active braking performance, small bump sensitivity, low pedal kickback and maximum efficiency. The result is a light, stiff, and compact structure that promotes excellent control and energy transfer for the rider.


Traction

To achieve just the right amount of travel for each of our models we optimised the leverage ratio, ensuring the perfect balance between progression and small-bump sensitivity.


Control

Our system relies on two short links with major benefits: increasing front-to-back frame stiffness for decreased frame stress and better overall wheel tracking. Pick your line and let the bike do the rest.


Efficiency

No rider wants to waste energy – we aim for an efficient design in every model we make, keeping the tires on the ground and making the most of every pedal stroke.