Maxxis Rekon Race Tire - 27.5 x 2.25 Tubeless Folding Black Dual EXOMaxxis Rekon Race Tire 27. 5 x 2. 25 Tubeless Folding Black Dual EXO. This semi slick tire borrows its tread design from the trail version of the Rekon but with smaller and shorter knobs. Use it as a rear tire paired with a more aggressive front tread or front and rear for short track racing. Semi slick XC race tire TECH SPECS Color Black Flat Protection Sidewall TPI 120 Defined Color Black ISO Width (mm) 57 ISO Diameter 584 650b 27. 5" Tire Intended