The EPO is a US Made, Italian steel, road frame. Actually, it's 38c max tire clearance makes it an All-Road bike, right? Who knows anymore. Anyway...the EPO is built by Darren Larkin up in Connecticut in very small batches. It's made up of an assortment of the finest Columbus steel available. The fine Italian tubes provide a ride quality that will have you wanting to push this bike like you've been juiced up and are breaking away in the '99 Tour de France. Each frame comes paired up with an ENVE AR Disc Fork to match the frame's tire clearance and keep the front end light and nimble. Build Notes: !!IMPORTANT!! These are available either with OR without shifter cable guides for those of you devoted to the eTap. When selecting your frame size, if you want shift cable guides choose MECHANICAL, if you're running eTap for life then choose ETAP. Designed around a 700c wheelset with a max tire size of 38c. You could set it up 650 as well and have around the same tire clearance. Max Chainring Sizes: 1X= 50t | 2X= 53/39t Flat Mount Brake Calipers front and rear Max Rotor Sizes: 160 Front | 160 Rear Front and rear thru axles are included This frame is not ED Coated and has not been treated internally. If you feel the need to do so, do it. Maximum amount of spacers on steerer 40mm (this does not include the stem) HEADSET NOT INCLUDED Details: Handmade in USA by Darren Larkin Tig Welded High End Columbus Steel Frame with Carbon Fork Color- Silver Flake Metallic Black Sizes- Extra Small 52cm | Small 54cm | Medium 56cm | Large 58cm Head Tube Diameter- Tapered 34/44 (1 1/8" to 1 1/4" Threadless steerer) Bottom Bracket- 68mm English (BSA) Threaded Steerer Tube Length- 400mm Fork Spacing- 12x100mm Rear End Spacing- 12x142mm Front Axle Thread Pitch & Length- 1.5x127mm Rear Axle Thread Pitch & Length- 1x162mm PMW Syntace Skewer Seat Post Diameter- 27.2mm Seat Post Clamp Diameter- 30mm Fork Axle to crown - 382mm Weight- Frame (Large)- 1.89kg or 4lbs 5oz | Fork (Uncut Steerer)- 450g or 15.8oz Metric Sizing Chart: Standard Sizing Chart: