Steering blocks, brass (7 grams each) (left & right)/ 2.5x12mm BCS (with threadlock) (2)/ 2x6mm SS (with threadlock) (4)    Left and right brass steering blocks add 7 grams of valuable weight to the lowest part of your TRX-4m^™ for improved anti-rollover stability and superior rock-climbing capability. The steering blocks are carefully machined to preserve TRX-4M’s trail-tuned steering and suspension geometry. Includes 2.5x12 mm screws (2) and 2x6 mm screws (4).