X Long (+15mm): EU45 - EU48

The JetBlack S1 Sport Trainer is a magnetic resistance bicycle trainer that is perfectly tuned for fitness riding

Weight: The 170mm drop

Steel lockring

Mount: Post mount standard

100 Percent Aircraft 2 Full Face Helmet - L - Black 2023 Do Not Ship Internationally X Long (+15mm): EU45 -The evolution continues at 100 Percent, with the ongoing development and advancement of helmet technology. Created with world class performance in mind, their proprietary Smartshock Technology works in conjunction with the Patent Pending injection moulded chin bar and Multi Density EPS foam to keep you safe and extend performance all day long. Carbon Fiber Shell Patent pending Chin Bar integration Injection moulded Smartshock Rotational Protective