SPP Supersized™ 20mm Multi-Length Axle System
SPP brings Supersized™ Performance to one of the most critical components in BMX racing — the axle.
Developed under the direction of BMX legend Toby Henderson, the SPP Multi-Length Axle System is engineered around Supersized™ Cap Technology, increasing the surface area where the axle meets the dropout. By expanding the contact footprint, SPP improves clamping stability and reduces micro-movement at the interface — increasing overall system stiffness under race loads.
Most axles are built around fixed lengths — which is why SPP developed a multi-length platform that adapts across fitments while also redesigning the contact zone itself. Length flexibility improves compatibility. Supersized™ Cap Technology improves rigidity.
Supersized™, precision-machined alloy caps create a broader, more stable interface at the dropout, reducing deflection during sprint acceleration, hard landings, and repeated gate hits. The result is a more controlled, more responsive front or rear end — with less flex where it matters most.
Each axle is machined from high-grade 7000-series aluminum for consistent clamping performance and fatigue resistance. The adjustable architecture covers multiple fitments in one precision unit, with laser-marked length ranges clearly identified on the body for accurate setup. Available in 104–125mm and 125–175mm configurations, and offered in 15mm and 20mm versions the system delivers adaptability without sacrificing stiffness.
Machined alloy SPP end badges are integrated directly into the Supersized™ caps, reinforcing the structure while delivering a clean, premium finish. Packaged in SPP’s signature retail hang bag, the axle integrates seamlessly into the broader Supersized™ Performance lineup.
This is not just adjustable hardware, This is Supersized™ Performance applied to flex control — built to keep your setup tight from gate to finish.
SKUSP-AX20125-BK