• For use on MTBs in the Tour, Cross-Country / Marathon, All Mountain and Enduro categories. From 136 g (aluminium). • Stem angle of +/- 7 ° for 31.8 mm clamping. • Suitable for the sporty SQlab handlebar series 311. Approved up to ASTM F2043-13 category 3 (not suitable for bike park and downhill). • The 811 2.1 stem is delivered without the SQlab Ahead Cap 1 1/8 "and countersunk screw shown. • Available in lengths 70, 90 and 100 mm.