Our UMBRA 1817 rim is the lightest alloy rim we make, it remains broad and open in form to maintain stiffness, it’s tubeless compatible and available in the widest range of diameters.

• 6069-T9
• Welded
• Tubeless compatible
• Hook width 18mm
• Depth 17mm
• dD width 6
• Weight 336gr (622), 320gr (590), 315gr (584), 300gr (559), 292gr (540)
• ERD   604.5mm (622), 572.5mm (590), 566.5mm (584), 541.5 (559), 522.5 (540)
• Section neutral radius 307mm (622) 291mm (590) 288mm (584) 275mm (559) 266mm (540)
• MOI 15.8 (622), 13.5 (590), 13.1 (584), 11.4 (559), 10.3 (540) gm2
• Second moment of area (cm^4)  Ix 1.84, Iy 3.89