Its Light weight seal structure helps to remove vital grams to keep the weight as low as possible

Upgradable with aftermarket parts

MATERIAL: 6061 alloy tube spacer and outer spacers

Made from super strong 8mm thick 6061-T6 aluminium for the sprocket with a high-impact

Fit BF Stem 165mm Its Light weight seal structureFit's BF Stem sits somewehere between their Aitken and High Top stems adding a more mid rise option to their line up. Made in the USA from fully CNC machined 6061 T6 aluminium that's tough and durable with no unnecessary cut outs sacrificing strength. ###section### Product Specs TYPE: Top Load REACH: 48 51mm RISE: 28. 66mm (2. 84mm inverted) CLAMPING DIAMETER: 22. 2mm WEIGHT: 280g (9. 92oz)