LaserDisc rims have incorporated Safety Seals-two raised bumps inboard of the horizontal shelves (bead seats) that locate the tire beads on the rim's inside diameter. These slightly higher lips, together with the positive inner diameter location of the bead help to retain the tire form pulling away from the hook during heavy lateral loading. All Laser Series rims feature WTB's patented I-Beam technology a centrally located member to counter spoke loads and provide torsional rigidity, this beam is a distinctive feature pioneered by WTB. Found exclusively on WTB LaserDisc rims. Also LaserDisc rims have the Unbendium Bulge a band of material added on rim sidewalls to counter torsional, radial and lateral flex. This rib, mid-line at the widest point, encounters the highest loads on bump impacts and provides integrity for greatest strength benefit at minimal weight
WTBs LaserDisc Trail features: Usage: All Mountain Racing 28/32H Size: 26" Width: 21>27mm ERD 535 Eyelets k