Dirt bike on a stand with its forks removed and suspension parts laid out on a bench mat, a typical AMSOIL suspension fluid rebuild

AMSOIL Suspension Fluid

Synthetic suspension fluid for motorcycle, ATV, UTV, and performance suspension systems.

AMSOIL suspension fluid

Buy AMSOIL suspension fluid for motorcycle, ATV, UTV, mountain bike, and performance suspension systems. Synthetic shock therapy 5W and 10W formulas resist foaming and shear under repeated cycling.

Buy online, or save up to 25 percent on every order by joining the AMSOIL Preferred Customer program for $20 USD per year. For local pickup, the where to buy AMSOIL guide covers the AMSOIL Dealer locator and how to find AMSOIL near you.

Order AMSOIL Suspension Fluid Online

Add an AMSOIL Preferred Customer membership to the same cart to unlock up to 25% off qualifying products. Existing members can sign in, and qualifying orders currently over $100 can ship free.

Suspension Fluid Products

Compare the full lineup below, then use the AMSOIL online lookup guide to confirm the formula and viscosity that fits your application.

AMSOIL Shock Therapy #10 Medium Suspension Fluid staged in an automotive workshop

AMSOIL Shock Therapy® #10 Medium Suspension Fluid

AMSOIL Suspension Fluid

AMSOIL Shock Therapy Suspension Fluid #10 Medium is a synthetic shock and fork oil formulated for suspension systems that need firmer damping.

AMSOIL Shock Therapy #5 Light Suspension Fluid staged in an automotive workshop

AMSOIL Shock Therapy® #5 Light Suspension Fluid

AMSOIL Suspension Fluid

AMSOIL Shock Therapy Suspension Fluid #5 Light is a fully synthetic shock and fork oil engineered.