Description It’s been just over 5 years since FARR first introduced the Carbon Aero Bolt-On. What started out as an idea to add an additional hand position and comfort to 31.8 Handlebars has evolved significantly since then. During the 5 year period we also added products to the complete handlebar category, offering handlebars ( the Aero Gravel, Aero Drop & Aero MTB ) for both styles of riding – those being dropbar riders and mountain bikers. Whilst the original concept was all about keeping things compact and lightweight, the demands and growth of Gravel / Adventure / Bikepacking events has certainly evolved too. What we have developed here is our evolution of the original Bolt-On concept… Available in 2 versions, catering for a mixed variety of riders and bike setups. The options are almost unlimited in terms of usage and combinations with our other existing products. Extender Large 120mm: This is the longer version and can be used individually or combined with Aero Gravel / Aero Drop / Aero MTB. These are also compatible with both versions of our Armrest Kit.   Note : The extender products feature the 31.8mm clamps used on the Aero Bolt-On family and can be converted to 22.2mm size clamping via the new Alloy Shim-Set.