- Our long 'n' low Tarn frameset is the perfect way to get creative with your own 27.5+ custom build! Updated to handle the 130mm fork of your dreams, the steel frameset is built to take the rowdiest of trails at home and overseas. With a winch up, charge down mentality and that connected feeling only a hardtail can give, the Tarn's handling has been honed at British trail centres and National Parks. Spec it with 27.5+, 29er or even go for a mullet hardcore hardtail! If you need even MOAR range, the Tarn will take a top swing or side swing FD, comes with a shim for either a comfy 27.2mm rigid post or 31.6mm dropper along with a port for stealth routing. It has boost spacing front and rear (110x15/148x12mm) and Shimano's brilliantly simple E-thru I-Type rear axle. Both Shimano direct and old type mech hangers are included, along with a sealed bearing headset to round up the carefully considered details.