Optis Tubeless Tire Insert - 27.5" x 28-40mm Insert Only ModelNumber=D1325 Made in Wisconsin

Made in Wisconsin

Small ergonomic design fits anywhere but performs like full size chain tool

Di2 technology results in precise and clean wireless shifting

Whether after work or on an adventure trip there are virtually no limits to the "Allrounder"

}Surly Skid Loader Dual Battery Hardware Bracket

Optis Tubeless Tire Insert - 27.5" x 28-40mm Insert Only ModelNumber=D1325 Made in WisconsinOptis Tubeless Tire Insert 27. 5" x 28 40mm Insert Only. OPTIS (Odyssey Pneumatic Tire Insert System) is a lightweight highly tunable high efficiency tubeless tire insert. Tire assemblies are one of the most important performance factors for any bike. They provide all the grip to the ground they serve as a critical first element of the bikes suspension and they provide essential support to the cornering forces that the bike encounters. OPTIS separates