Optis Tubeless Tire Insert - 27.5" x 28-40mm Insert w/ Standard Presta Valve MFPN=4196300 BB Included No Chainline/Hub Compatibility LS comp and 3

Optis Tubeless Tire Insert 27.5" x 28 40mm Insert w Standard Presta Valve MFPN=4196300 BB Included No Chainline Hub Compatibility LS comp and 3 BB Included No Chainline Hub Compatibility 141 148 Boost Hubs Chainring BCD Direct Mount SRAM Color Gray Crank Intended Use Mountain Crank Length (mm) 175 Defined Color Gray Drivetrain Speeds 11 Drivetrain Speeds 12 Number of Chainrings Chain Retaining Single Pedal Spindle 9 16" Rings 32 Spindle Interface Type SRAM DUB Includes system to quickly and conveniently adjust clamping widths OPTIS separates the function of the bikeʼs grip from its suspension and stability by turning the tire into a two chamber system Instead of forming to the internal tire casing like an ordinary inner tube OPTIS cinches down against the tire bead and hugs the rim when inflated