Motorcycle Shock Spring Mechanical Preload Adjusters

MPA - Mechanical Preload Adjusters

Mechanical preload adjusters give precise, repeatable control of rear spring preload and sag height without struggling with castellated rings. These lightweight, compact kits replace awkward stock collars so you can fine tune preload quickly with a socket or ratchet, protect paint from spanner marks and carry out simple DIY upgrades using a shock spring compressor. Preserve a well maintained chassis with fresh oil and correct clutch setup for the best results when tuning suspension: see repairing & servicing, engine and suspension lubricants and clutch setup.

Faster, more accurate spring preload adjustments for road and offroad use

• Quick preload changes with a socket for rapid pit or roadside tuning
• Wide adjustment range to correct sag height for riders, luggage or a pillion
• Durable internals and reduced paint damage compared with wrenching stock collars
• Simple DIY fitment, compatible with most rear coilovers and spring compressors

Recommended Pairings

Consider matching with suspension tools and specialist parts like Suspension Tools or the X-Trig replacement collars in our X-Trig range. For frequent load changes, view hydraulic preload adjusters.

Shop MPA - Mechanical Preload Adjusters

Browse our selection of mechanical preload kits to make rear spring setup faster, neater and more precise.