Biobased Suspension Oil

What Our Gearhead® Experts Are Saying:

"I have been using the Stan's Biobased Suspension Oil through a full season of fork and shock services and the performance consistency across viscosities is as reliable as anything I have used from the major suspension manufacturers' own branded oils. The triple-ester formula is noticeably smooth during service and the small bump sensitivity after a fresh fill with the 5wt is excellent on technical terrain. The fact that it is biodegradable and USDA-certified is genuinely meaningful to me as someone who does a lot of trail-side service work, and the 1000ml volume makes the price per service very competitive for a premium biobased product."

Suspension oil does not make headlines the way a new fork or shock does, but it is the variable that determines whether that fork or shock performs the way it was designed to. Stan's NoTubes built the Biobased Suspension Oil in collaboration with professional mountain bike athletes and mechanics operating out of Whistler, BC, one of the most technically demanding and weather-variable riding environments in the world. That context shapes every aspect of the formula, from the viscosity range to the long-term stability properties that matter when a bike is being ridden hard across a full season of varied conditions.

The technical foundation of the oil is triple-ester technology, a formulation approach that provides extreme lubricity while actively protecting seals, bushings, and internal surfaces from the wear and friction that degrade suspension feel over time. High oxidative stability means the oil resists thermal and chemical breakdown under sustained use, maintaining its intended viscosity and performance characteristics well beyond what conventional mineral oils typically deliver between service intervals. The formula is PTFE-free and additive-free, which eliminates the buildup concerns associated with some conventional suspension oils and contributes to the consistent compression and rebound feel that riders and mechanics notice immediately after a fresh service. Five viscosity options spanning 2.5 through 20wt give mechanics the flexibility to spec the oil correctly for any fork or shock on any part of the travel and damping curve, rather than compromising with a one-size approach.

The biobased and biodegradable composition is USDA-certified, which is a meaningful distinction from greenwashing: it reflects a verified standard for natural ingredient content and environmental safety. For shop mechanics and home builders doing regular service work, the non-toxic formula reduces exposure risk without any tradeoff in performance or shelf life. At 1000ml per bottle, the volume is practical for operations servicing multiple bikes across a season, and the price per service remains competitive with conventional premium suspension oils despite the elevated sourcing and certification standards. For riders and mechanics who want a product that performs at the highest level and aligns with a more considered approach to what goes into and eventually out of their components, this is the oil to have on the bench.