Salsa BLKthorn 145 C GX AXS Transmission Bike - 29" Carbon Slate / Terracotta LargeSalsa Blackthorn 145 C GX AXS Transmission Bike 29" Carbon Slate Terracotta Large. Blackthorn 145 is Salsas All Mountain Bike. Its a rugged rig thats ready for backcountry trails and rowdy lines. Its most at home on the steep and techy terrain both up and down the mountain. Built to be capable confident and cargo friendly without being a handful Blackthorn 145 brings the fun to big days on the trail. Specifications: Rear Axle 12mm Thru x 148mmBrake