The Subrosa OM frame is Joris Coulumb's signature model that has everything you need & nothing you don't to help keep cost down. Made from 4130 chromoly tubing with a heat-treated integrated headtube that's extra tall to eliminate the need for headset spacers,  removable gyro tab holes,  a double-butted top & downtube with Subrosa logo gussets,  heat-treated Mid BB shell,  seatstay located bosses for removable U-brake mounts (sold separately),  S-bend chainstays & 6mm thick heat-treated dropouts. section Product Specs 
 Material:  Full 4130 Chromoly HEAD TUBE ANGLE: 75° SEAT TUBE ANGLE: 71° CHAIN STAY LENGTH: 12.9" BB 
 Height: 11.7" WHEEL 
 Size: 20" STANDOVER 
 Height: 9" DROPOUT 
 Size: 14mm HEADSET TYPE:  Integrated BB TYPE:  Mid BRAKE MOUNTS:  Removable GYRO TABS:  Removable WEIGHT: 4.8lbs section Product Highlights Responsive Geometry with Short Backend & Steep Headtube Great all round frame for all types of riding Top Tube & Downtube gussets with butted tubing for added strength Taller Top Tube so you can run your bars higher without headset spacers Removable break mounts & pre-drilled for gyro tabs shogun-image-section