Lynskey ridgeline 275 titanium framethe ridgeline 275 is your best all day on the trail choice a perfect blend of comfort and performance with a 73mm threaded bb 349 seattube 12x142 thru axle dropouts and square shaped oversized tubing featuresbest suited to 120mm forksaccepts up to a 185mm rear rotorcable routing under top tube headtube design taperedintegratedbottom bracket type 73mm threaded pf30seatpost diameter 27 2mmseat tube diameter front derailleur clamp size 34 9mmwhee