The OB1 À La Carte

Thesis Verified independent store

→

While our original spec results in our idea of the perfect bike, we can’t wait to see what yours looks like. Whether you’re looking to run vintage XTR with bar end shifters for tou ring, you’re a Campy person, or you want to migrate parts over from a past bike, our frame module sets you up to build your unique version of the OB1. By default, all À La Carte OB1s include thru axles, headset, and seat collar. Want help building your perfect bike? Schedule a consult with one of our resident bike nerds to discuss your fit and chat about your build. Overview Specs Geometry FAQ With nimble yet stable endurance geometry, the OB1 is truly a do it all machine. Chase down roadies, explore some new singletrack, or load up for a long adventure. Join the N=1 revolution. Current lead time: Frames ship in 2-4 weeks depending on size and color. Frame modules require full assembly. We strongly suggest using a professional mechanic to build your bike to ensure you get a safe and reliable machine. Why you'll love the OB1 Endurance road geometry for all day comfort and balanced handling. Tailored fit with customizable choice of stem length, bar width, and crank length. Optional integrated dropper post puts you in control when the going gets rough. Clearance for high volume tires up to 650B x 47mm and 700C x 40mm for exceptional traction and a smooth ride. Specs Chassis | Cockpit | Wheels Click on the name of each component to learn more about why we chose it. Every detail is chosen for the optimal balance of performance, durability, and serviceability. To learn more about our approach, check out how we built a high-end carbon dream bike. CHASSIS FRAME Thesis OB1 Carbon DETAILS Spirited yet stable endurance road geometry Clearance for 650B x 47mm or 700C x 40mm Mounting points for (5) cages, fenders, a bento, and more Up to 46T or 50/34T chainrings Round 27.2 seat tube with traditional seat post clamp Construction: Reinforced Toray 800/700 1145g +/-5% (medium black w/o hardware) WHY WE CHOSE IT From road to gravel to travel, our OB1 frameset is ready for every road. Its sleek road-bike design hides clearance for wide dirt tires and discreet mounting points for bags, fenders, extra bottles, and everything else you may need along the ride. From reinforcement at every hole and boss, to anti-corrosive fiberglass where carbon meets metal, to bolt-secured aluminum cable guides, we've invested in the details to deliver you performance without compromise. FORK Thesis OB1 Carbon with SteerSafe DETAILS Accommodations for fenders, headlight, and cages Clearance for 650B x 47mm and 700C x 40mm tires Steersafe-reinforced carbon steerer 12x100mm thru-axle dropouts Reinforced Toray 800/700 carbon construction 445g fork | 45g SteerSafe WHY WE CHOSE IT We created SteerSafe to ensure your carbon steerer is fully supported against stem clamping forces. SteerSafe is an aluminum tube with built-in starnut that gets bonded into our carbon steerers at the factory. To shorten a SteerSafe equipped steerer, simply cut through the carbon and aluminum layers using a guide and a carbon-specific blade as you would a normal carbon steerer, then use ultra-fine sandpaper to create a smooth, slightly rounded edge. Finish by torquing the lubricated stem bolts to 5 Nm. Note that we pre-cut our steerers to an exposed length of ~69mm, then bond in our SteerSafe insert from there. We do this to prevent folks from using a tall stack of spacers below a downward-pointed stem, as this can lead to imprecise steering. Those needing a more upright position should start be flipping the stem. Should this prove insufficient despite the OB1s relatively tall head tube, we recommend sourcing a 17 degree stem in order to maintain steering precision. THRU-AXLES Thesis Hollow-Light Bolt-On DETAILS Hollow bolt-on 6mm hex head Strong and durable 7075 alloy Just ~80g per set WHY WE CHOSE IT Our hollow bolt-on thru-axles are machined from ultra-premium 7075 aluminum for strength, durability, and ease of wheel removal at less than half the weight of levered designs. SEATPOST CLAMP Thesis Flush DETAILS Integrated look Traditional clamping interface for even distribution of forces WHY WE CHOSE IT OB1's seat clamp achieves its integrated look while utilizing a traditional clamping interface that, unlike proprietary integrated designs, evenly distributes clamping forces to avoid seatpost creaking, slipping, or cracking. HEADSET Thesis Integrated Stainless DETAILS Stainless steel cartridge bearings Sealed upper cap Split crown race Upper: 41.8x30.5x8 | 45°x45° Lower: 51.9x40x8 | 45°x45° WHY WE CHOSE IT Designed for durability, our lightweight integrated headset features premium stainless steel bearings to prevent corrosion in wet and muddy conditions. The sealed top cap provides an extra barrier to water penetration and its replaceable aluminum split crown race protects the carbon steerer crown from wear while being less prone to creaking than non-split races. DERAILLEUR HANGER Thesis Replaceable DETAILS Rigid for use with long-cage derailleurs Axle threads directly into the hanger Extra included just in case WHY WE CHOSE IT Flexy derailleur hangers compromise shifting and are quick to fail. The OB1's is stiff and strong to withstand the greater loads placed on it by today's long-cage derailleurs and wide range cassettes, but will still sacrifice itself to protect the derailleur and frame in the event of a major impact. And don't worry - we include an extra just in case. MOUNTING POINTS Click for details Mounting points for all your gear: 2 bottle mounts in the front triangle 1 bottle mount below the downtube 1 bento mount on the top tube 2 bottle mounts on the fork blades Front and rear fender mounts (seat stay bridge included) Wide central clamping area on handlebar Note: For optimum performance, load your heaviest items in a frame bag secured in the main triangle.Max weight of rider + gear: 125kg (275lbs) COCKPIT SEATPOST Thesis Ultralight 3D-Forged Rigid DETAILS 1-piece 3D-forged 2014-T6 alloy construction Easily adjustable, exceptionally secure 2-bolt clamp Reversible head 0° offset to match the frame's 73° seat tube angle Reversible lower clamp 230g (400mm) | 210g (350mm) WHY WE CHOSE IT OB1's seatpost weighs less than some carbon posts yet is safe to use with clamp-on accessories like bikepacking seat bags. Its quill is forged from a single billet of ultra-premium 2014-T6 aluminum for outstanding strength to weight. The 2-bolt clamp offers superior saddle adjustability, security, and support, while the supportive lower clamp plate is reversible to allow an extreme range of fore/aft positioning. SEATPOST Thesis 27.2 Integrated Dropper (+$149) DETAILS Infinitely adjustable Lightweight 1-piece forged head and quill Easy to adjust 2-bolt clamp with reversible head Premium 7075-T651 aluminum construction Clean internally-routed design Serviceable with readily available parts Tests to an ISO MTB standard Actuated by front shifter 405L|110mm (485g), 360L|90mm (460g), 310L|70mm (425g) WHY WE CHOSE IT A dropper post is an absolute game-changer. Dropping the saddle out of the way allows you to shift your center of mass down and back over the rear wheel, keeping your front end light, allowing you to use your rear brake for speed control, and freeing your legs to act as suspension. The result is increased control, speed, and confidence over steep or technical terrain. They're even great for fast road descents. We've been riding droppers on our drop-bar bikes since before it was cool, so whether you're looking to get shreddy off-road or just want to feel safer on that high speed road sweeper, a dropper is an option well worth considering. The 2-bolt clamp offers superior saddle adjustability, security, and support, while the supportive lower clamp plate is reversible to allow an extreme range of fore/aft positioning.Check out the "Why Gravel Posts are an absolute game-changer" tech segment we produced with The Gravel Ride Podcast to learn more about why you'll want a dropper on your next bike. CRANKSET Thesis Hollow-Forged DETAILS Thesis Hollow-Forged Alloy Hollow-forged 6061 alloy arms Machined 7075 alloy BB386EVO spindle Machined 7075 alloy narrow-wide chainring (6mm offset) Open-standard 3-bolt DM chainring interface Compatible with 4iiii single-sided power meters 625g crank (172.5), 99g chainring (42T) WHY WE CHOSE IT Strong, Stiff, Light: Pick 3. How do you create a crank that achieves extraordinary stiffness-to-weight in an easily serviceable package that isn't afraid of a rock strike? Take two billets of ultra premium 7075 aluminum. Smash each under 600 tones of force to form two hollow, box-section arms. Then take another billet of that same alloy and machine it into a large diameter BB386 spindle to push the bottom bracket's oversized bearings as far apart as possible for even more stiffness and durability. Sandblast rather than polish all surfaces to pound-out microfractures, and anodize everything for an even harder and longer-wearing finish. BOTTOM BRACKET Thesis Thread-Together Stainless DETAILS Precision-milled, thread-together aluminum shell Premium NSK Japan 6806 stainless steel sealed cartridge bearings Open standard BB386EVO interfaces 29mm spindle adaptors used with SRAM cranks 145g WHY WE CHOSE IT Our thread-together aluminum BB shell is strong and stiff to ensure perfect alignment and support our widely-spaced, large-ball cartridge bearings. It's the same $70+ solution that mechanics turn to when cheap press fit bottom brackets creak and fail. It adds a handful of grams and quite a bit of cost, and we think the increased durability, efficiency-under-load, and general peace of mind are well worth the investment. HANDLEBAR Thesis Compact Ergo Flare DETAILS 116mm drop | 75mm reach | 10 ° flare Comfy aero flat top Wide central clamping area for accessories Double butted alloy WHY WE CHOSE IT Aero on the tops, control and comfort in the drops. With a short reach, shallow drop, and subtle 10° of flare, our handlebar keeps you comfy when motoring on the hoods while offering greater leverage when cornering, descending, or shredding dirt in the drops, all while reducing back and wrist strain. Its wide central clamping area allows you to attach a bell, GPS, bar bag, aero clip-ons, or all 4 at once if that's what your adventure requires. STEM Thesis Ultralight DETAILS 3D-forged 7050 aluminum 7° angle Exceeds ISO Road and MTB standards 105g (100mm) WHY WE CHOSE IT A top-of-the-line stem equivalent to others retailing at $100+, our 7050-series alloy stem is stronger, stiffer, and lighter than others' $250+ carbon offerings. WHEELS Lōgōs Epoché 700C Carbon RIMS Lōgōs Epoché 700C Carbon DETAILS 24ID|32W|30D Aero-optimized for 28/30mm tires Wide enough to support 40mm+ tires 2.5mm of asymmetry for balanced spoke tensions Bead hooks for blow-off prevention & non-tubeless compatibility Angle drilling & reinforced nipple seat for durability Blended-modulus T800/700 unidirectional construction 20 - 110psi Show more