OPEN UPPER CONCEPT
Request Info
OPEN UPPER CONCEPT
Product Details
The OPEN UPPER CONCEPT marks a new chapter for OPEN, introducing a bold direction for their next generation of bikes. This exclusive model is a limited-edition concept, available in just two sizes (Medium and Large) with only 125 units per size to celebrate the OPEN 12.5 milestone. Once the molds are retired, this unique frame will never be produced again, making it a rare collector's item. If you don't fit into the available sizes, there's no need to worry; the full range of U.P. models, with five sizes, will be released in Spring.
So why a concept bike? OPEN’s philosophy has always focused on simplicity and longevity, with innovation aimed at refining what already works. The U.P.PER. CONCE.PT reflects this mindset, introducing new shapes and design features while staying true to the brand’s DNA. This bike highlights the balance between aerodynamics and comfort, a core principle for OPEN, especially in gravel riding. While aerodynamic gains can offer benefits, comfort and compliance are essential for achieving real-world speed. These qualities help riders maintain their position and power over longer periods.
The new frame includes a subtly reshaped downtube, designed to improve airfoil efficiency without compromising compliance. The headtube is also narrower and deeper, reducing drag while maintaining the smooth ride quality that OPEN is known for. With a clean and minimalist design featuring straight chainstays, no front derailleur mounts, and no fender mounts, the UPPER CONCEPT focuses purely on performance and aerodynamics, eliminating unnecessary complexity.
This bike is not just a concept. It is the first frame produced in collaboration with CarbonTeam in Portugal, marking a shift to European production that ensures an even higher level of quality and craftsmanship. Although manufacturing in Europe increases production costs, OPEN has committed to this path to deliver improved customization and performance while keeping pricing as close as possible to current models.
The UPPER CONCEPT represents more than just a new frame. It is a milestone and a limited-edition creation that embodies everything OPEN stands for: innovation, performance, and craftsmanship.
PLEASE NOTE: All Medium frames come with the OPEN cockpit/seatpost with a stem size of 80-95mm and bar width of 42cm.
Key Features
- OPEN All-Carbon Frame
- OPEN Carbon One-piece Bar Stem Combo
- OPEN Carbon Seatpost
- Straight Chainstays for Maximum Power Transfer and 44–46mm Tire Clearance
- UDH Compatibility for Standard and SRAM Transmission Drivetrains
| Component | SRAM Rival/GX AXS Transmission Mullet | SRAM Rival AXS XPLR | SRAM Force/X0 AXS Transmission Mullet | SRAM Force AXS XPLR | SRAM RED/XX SL AXS Transmission Mullet | SRAM RED AXS XPLR 13-spd | Shimano GRX Di2 1x 11-spd | Shimano GRX Di2 2x 11-spd | Shimano GRX Di2 2x 12-spd |
|---|---|---|---|---|---|---|---|---|---|
| Levers/Calipers | SRAM RIVAL eTap AXS HRD Lever/Caliper | SRAM RIVAL eTap AXS HRD Lever/Caliper | SRAM Force AXS HRD eTap D2 Lever/Caliper | SRAM Force AXS HRD eTap D2 Lever/Caliper | SRAM RED AXS HRD Lever/Caliper | SRAM RED AXS HRD Lever/Caliper | Shimano ST-RX815 GRX Brake/Shift Lever + CALIPER | Shimano ST-RX815 GRX Brake/Shift Lever + CALIPER | Shimano ST-RX825 GRX Brake/Shift Lever + CALIPER |
| Crankset | SRAM Rival DUB Wide Crankset | SRAM Rival DUB Wide Crankset | SRAM Force DUB WIDE Crankset | SRAM Force DUB WIDE Crankset | SRAM RED AXS DUB WIDE Crankset | SRAM RED AXS DUB WIDE Crankset | Shimano GRX FC-RX810-1 Crankset | Shimano GRX FC-RX810-2 Crankset | Shimano GRX FC-RX820-2 Crankset |
| Front Derailluer | N/A | N/A | N/A | N/A | N/A | N/A | N/A | Shimano GRX Di2 FD-RX815 | Shimano GRX Di2 FD-RX825 |
| Rear Derailluer | SRAM GX Transmission AXS Rear Derailleur | SRAM Rival XPLR AXS Rear Derailleur | SRAM X0 Transmission AXS Rear Derailleur | SRAM Force XPLR AXS Rear Derailleur | SRAM XX SL Transmission AXS Rear Derailleur | SRAM RED XPLR AXS 13-spd Direct-Mount Rear Derailleur | Shimano GRX RD-RX817 Di2 Rear Derailleur | Shimano GRX RD-RX815 Di2 Rear Derailleur | Shimano GRX RD-RX825 Di2 Rear Derailleur |
| Chain | SRAM GX T-Type Chain | SRAM Rival Chain | SRAM X0 T-Type Chain | SRAM Force Chain | SRAM XX SL T-Type Chain | SRAM Red Chain | HG701 chain | HG701 chain | CN-M8100 Chain |
| Cassette | SRAM GX T-Type 10-52t Cassette | SRAM Rival AXS 10-44t Cassette | SRAM X0 T-Type 10-52t Cassette | SRAM Force AXS 10-44t Cassette | SRAM XX SL T-Type 10-52t Cassette | SRAM RED AXS 10-46t Cassette | Shimano CS-M7000 11-46t Cassette | Shimano HG700 11-34t Cassette | Shimano CS-R8100 11-34t Cassette |
| Rotors | SRAM Centerline Rotor | SRAM Centerline Rotor | SRAM Paceline Rotor | SRAM Paceline Rotor | SRAM Paceline X Rotor | SRAM Paceline X Rotor | Shimano SM-RT64 Rotor | Shimano SM-RT64 Rotor | Shimano SM-MT800 Rotor |
| Battery/Extras | Batt/Charger | Batt/Charger | Batt/Charger | Batt/Charger | Batt/Charger | Batt/Charger | Battery/Wires/Charger | Battery/Wires/Charger | Battery/Wires/Charger |
| Specification | Detail |
|---|---|
| Stock Colors | Carbon clear black |
| Finish Options | Painted frame with minimalist decals, Paint ready, or Raw-Ready-To-Paint for custom painting |
| Weight (Frame Only) | 845g (Size M, without metal parts, ±3%) |
| Weight (Fork Only) | 370g (Uncut steerer, ±3%) |
| Sizes | M/L (see geometry below) |
| Raw-Ready-To-Paint (RRTP) | No clearcoat required for UV, but recommended for scratch/wear protection. Some riders leave frame bare. |
| BB Standard | T47 threaded bottom bracket (internal cups), 86mm wide shell |
| Recommended Groupsets | Electronic gravel groupsets such as Shimano GRX Di2 or any SRAM eTap. Use a rear derailleur with clutch or damper for off-road use. |
| Front Derailleur Mount | None |
| Front Thru-Axle | 100x12mm superlight Carbon-Ti X-12 |
| Rear Thru-Axle | 142x12mm superlight Carbon-Ti X-12 |
| Front Disc Rotor Size | 160mm only |
| Rear Disc Rotor Size | 160mm only |
| Front Brake Caliper Mount | Smartmount 160 system — attaches flatmount caliper without adaptor |
| Rear Brake Caliper Mount | Smartmount 160 system — attaches flatmount caliper without adaptor |
| Headset | IS52/40 x 45° upper and lower bearings (standard, widely available) |
| Seatpost | 27.2mm round — compatible with dropper and/or suspension posts |
| Contents |
Frame Fork OPEN B.A.R. 1-piece handlebar/stem Seatpost Headset UDH RD Hanger Noise-Reduction Foam Sleeves Bottle Cage Bolts Manual |
| Size | M | L |
|---|---|---|
| Suggested Rider Height (cm) | 169–180 | 178–191 |
| Suggested Rider Height (in) | 5'6"–5'11" | 5'10"–6'3" |
| Stack | 570 | 595 |
| Reach | 380 | 392 |
| Seattube Length (BB-to-top of TT) | 483 | 504 |
| Standover | 777 | 799 |
| Headtube Angle | 71.5° | 72.5° |
| Seattube Angle | 73.5° | 73.5° |
| Toptube Length (horizontal) | 545 | 564 |
| BB Drop | 75 | 73 |
| Front Center | 610 | 614 |
| Rear Center | 425 | 425 |
| Wheelbase | 1024 | 1028 |