XTRIG 500010500101 Rear Shock Pre-Load Adjuster Mechanical Worm Drive

The XTRIG 500010500101 Pre-Load Adjuster is a precision-engineered mechanical device designed to replace the stock double preload rings on your rear shock absorber, making spring preload and race sag adjustments faster and easier than ever. Purpose-built for off-road and motocross racing, this adjuster is trusted by professional factory teams and serious amateur riders alike.

Instead of relying on a hammer and punch to move stubborn preload rings, the XTRIG adjuster uses a worm drive gear system housed in a billet casing. A simple 8mm T-handle or socket is all that's needed to spin the adjuster up or down along the full length of the shock body's threads, giving you the maximum possible range of adjustment with minimal effort.

Because the design is fully mechanical—with no hydraulics, no oil, and no seals—there is nothing to leak or fail in demanding off-road conditions. The unit is also engineered to resist dirt and debris, with a machined relief area in the inner ring to prevent contamination from interfering with adjustment.

Key Features:

• Mechanical worm drive gear system — no hydraulics, no oil, no seals
• Replaces OEM dual preload rings on rear shock absorber
• Uses the complete thread length of the shock body for maximum adjustment range
• Fast, tool-assisted adjustment with a standard 8mm T-handle or socket
• Lightweight billet construction
• Dirt-resistant design engineered for off-road and motocross environments
• Ideal for quickly dialing in race sag between sessions or changing track conditions

Whether you're a racer fine-tuning suspension for changing track surfaces or a trail rider accommodating different loads, the XTRIG Pre-Load Adjuster delivers repeatable, reliable spring preload changes in seconds.