RIDER INFO

TFX Suspension Technology, No standard!

Take command of your suspension with the TFX The Xtreme + HPA (1423MSS). Featuring a high-performance piggyback reservoir and our signature Hydraulic Preload Adjuster, this rear shock absorber offers the ultimate combination of track day suspension precision and real-world versatility.

Designed for riders who refuse to compromise! This piggyback shock is engineered for those seeking the pinnacle of durability, control, and tuning capability. Whether you are pushing for lap times, enjoying aggressive street riding, or embarking on a high-speed tour, the 1423MSS delivers consistent mechanical grip and confidence.

Every TFX shock features damping valving specifically developed for your application, with a spring selected for your exact weight and riding style. Our modular assembly system ensures that any special requirements—like changes in length or custom anodizing—are handled as second nature.

The precision CNC-machined 7075 aluminum upper mount connects directly to the external reservoir. This design maximizes oil volume for superior thermal stability, preventing fade even under the most intense riding conditions.

The unit features a 3-way adjustable independent damping system: rebound, low-speed compression, and high-speed compression. This allows you to fine-tune your suspension behavior for any road or track surface. Best of all, the integrated Hydraulic Preload Adjuster lets you instantly tweak sag settings to account for a passenger or luggage, no tools required.