SEKA Spear RDC Disc Brake Road Frameset
The SEKA Spear RDC Disc Brake Road Frameset is a purpose-built aero frameset made for riders who need pure speed. Designed through extensive wind tunnel testing, this ultralight frame slices through the air with precision. The unique “Wind Eye” seat-stay opening smooths airflow around the rear wheel and adds seatpost flex which reduces road buzz. Its one-piece molded carbon frame, BSA threaded bottom bracket and optional Rapier integrated handlebar form a stiff and responsive race-ready platform. The Spear RDC features fully internal cable routing, 32 mm tire clearance and a refined aerodynamic profile tested by Aerocoach at Silverstone, UK. After analyzing over 280,000 data points, Aerocoach confirmed measurable drag reductions compared to the SEKA Exceed frame. SEKA relies on verified performance data, not marketing hype.
Built using a TeXtreme carbon layup reinforced with Mitsubishi PITCH 65T and PITCH 80 fibers, the Spear RDC delivers stiffness, low weight and real-world comfort. It’s 35 grams lighter than the standard Spear while maintaining incredible strength. Each frame goes through fatigue, impact and load testing to simulate years of riding. SEKA meets or exceeds ASTM F2802 and EN ISO 4210 standards and backs the Spear RDC Frame with a lifetime warranty. They also offer a five-year warranty on other carbon components.
The frame includes flat mount disc brakes and a BSA threaded bottom bracket shell. It works with mechanical, wireless and Di2 drivetrains. The SEKA Spear RDC Disc Brake Road Frameset is available with the SEKA Rapier One-Piece Handlebar for a clean, aerodynamic build. For riders chasing race-day performance or ultimate speed on the open road, the Spear RDC delivers elite-level results.
~Rapier One-Piece Handlebar~
SEKA offer several different sizes in their Rapier Handlebar that is designed for the Spear RDC Frameset… too many for us to list in the menus above! If you would like the Frameset to come with the Rapier Handlebar (as pictured) select ‘Yes’ on the menu. On the Checkout Page, just tell us what size to include in your order. No need to add the handlebar size you want to your cart – the cost is included with the ‘Yes’ option. Please view all available SEKA Rapier One-Piece Road Handlebars here to make sure we have the size you want in stock before ordering.
Product Details
Key Features of the SEKA Spear RDC Disc Brake Road Frameset
- Aero Tested Design: Aero frame shape with a streamlined seat tube, fork and ‘Wind Eye’ seatstays lets the frame slip through the air, conserving watts.
- Wide Tire Clearance: Accepts 32 mm tire widths, matching modern trends in road tire sizes, maximizing comfort with minimal power loss.
- Stiff Yet Compliant: A combination of intelligent frame design and advanced carbon manufacturing results in a frame that reduces fatigue without compromising stiffness for sprinting.
- Rigorous Quality Control: Extensive testing to ISO and ASTM standards makes this frame UCI compliant, and SEKA back themselves with a lifetime warranty on the frame and 5-year warranty on bars, seatposts and forks.
- Ultra-Lightweight: The RDC version of the Spear frameset focuses on weight reduction, with the painted size medium frame coming in at 729 grams.
Compatibility
The SEKA Spear RDC is widely compatible with most modern road components. It is compatible with wheelsets that are disc brake and use 12×100 mm front and 12×142 mm rear thru axles. This frameset uses a BSA threaded bottom bracket shell, and uses a conventional derailleur hanger or direct mount hanger. See Compatibility tab for more information.
Considerations
The SEKA Spear RDC Disc Brake Road Frameset offers impressive performance, but there are a few things to keep in mind. The fully-internal cable routing is optimized for SEKA’s own one-piece handlebars. This means using your own barstem is not as seamless. The geometry of the Spear is optimized for performance and speed. This does make the Spear RDC less ideal as an endurance bike.
Advice From Our Staff
The SEKA Spear RDC gives riders a true all-round aero frameset that performs at the highest level. Its stiff yet compliant construction delivers excellent power transfer while keeping road buzz to a minimum. The moderately aggressive geometry suits cyclists who value precision handling and efficiency under pressure. Those seeking a pure endurance setup may prefer something more comfort-oriented. However riders chasing versatility, aerodynamic performance and an ultra-lightweight frame, the Spear RDC stands out as an exceptional choice.
Options For This Frameset
Size: XS | S | M | L | XL
SEKA Spear Seatpost Offset: 0 MM Offset | 15 MM Offset
Compatibility
- Groupsets: This frameset is compatible with mechanical, wireless and Di2 groupsets.
- Tires: The maximum tire width for this frameset is 32 mm. Most 700 x 32c tires are 32 mm wide, but not all.
- Brake Rotors: The maximum rotor size for this frameset is 160 mm for the front and 160 mm for the rear.
- Wheelset: Compatible with 12x100 mm front and 12x142 mm rear thru axles wheelsets.
- Saddle Rail: The Spear Seatpost is compatible with both 7 x 7 mm standard rails and 7 x 9 mm carbon rails. In addition it supports 7 x 10 mm and 7 x 11 mm rails.
- Stem: As this frame uses fully-internal cable routing, we recommend using SEKA's Rapier One-Piece Handlebar for seamless integration. Using your own stem or barstem on this frame is technically possible, but might have some fitment issues with the spacers.
SEKA Spear RDC Frameset Specs
| Name | SEKA Spear RDC Disc Brake Road Frameset |
| Bike Type | Road |
| Wheelsize | 700c |
| Frame Sizes | XS | S | M | L | XL |
| Rear Dropout | 12 x 142 mm Thru Axle |
| Fork Dropout | 12 x 100 mm Thru Axle |
| Seatpost Shape | D |
| Seat Rail Compatibility | Regular 7 x 7 mm, Carbon 7 x 9 mm, 7 x 10 mm & 7 x 11mm |
| Seatpost Offset Adjustment | 0 mm or 15 mm depending on seatpost selection. |
| Frameset Material | Mitsubishi PITCH 65T & 80 Carbon Fiber |
| Color | Chronos |
| Frame Weight (with paint) | 729g (M) +/-35g |
| Max Tire Clearance | 700c x 32 mm |
| Max Brake Rotor Size | 160 mm Front | 160 mm Rear |
| Bottom Bracket Type | BSA Threaded |
| Compatible Drivetrains | Mechanical | Wireless | Di2 |
| Brake Type | Flat Mount Disc |
| UCI Approved | Yes |
| Max Rider Weight | 109 KG/240 lbs |
| Warranty | Lifetime on frame, 5 Years on fork, seatpost and bars. |
In The Box
- SEKA Spear RDC Disc Brake Road Frame
- SEKA Spear RDC Disc Brake Road Fork
- SEKA Spear Seatpost
- 12x100 mm front and 12x142 mm rear Thru-Axles
- Fork Thru-Axle Insert
- Headset Parts: Top and bottom headset Bearing (49.5 x 40.5 x 6.5 mm 45/45), 2 x 5 mm spacers, 3 x 10 mm spacers, 10 mm headset cover, Compression ring cable guide
- Standard derailleur hanger
- Front Derailleur mount
- Front Derailleur mount internal Di2 Battery Holder
- Seatpost clamp wedge assembly
- Rubber seatpost clamp cover, frame plugs
- Cable Dampening Sleeve
- 2 x Aero Bottle Cages & bolts
SEKA Spear RDC Frameset Geometry

| Diagram | Measurement | XS | S | M | L | XL |
| Rider Height Recommendation | 4'11" - 5'4" | 5'3" - 5'8" | 5'9" - 5'11" | 5'10" - 6'2" | 6'1" - 6'6" | |
| C1 | SEAT TUBE LENGTH (mm) | 449 | 463 | 480 | 508 | 535 |
| N | TOP TUBE LENGTH (mm) | 498 | 514 | 534 | 557 | 585 |
| REACH | REACH (mm) | 362 | 370 | 379 | 389 | 402 |
| STACK | STACK (mm) | 508 | 524 | 543 | 570 | 600 |
| L | HEAD TUBE LENGTH (mm) | 107 | 120 | 136 | 164 | 193 |
| Q7 | SEAT TUBE ANGLE | 75.0° | 74.8° | 74.0° | 73.5° | 73.0° |
| Q1 | HEAD TUBE ANGLE | 70.6° | 71.7° | 72.9° | 73° | 73.5° |
| H | BOTTOM BRACKET DROP (mm) | 74 | 74 | 72 | 72 | 72 |
| RC | CHAIN STAY LENGTH (mm) | 410 | 410 | 410 | 410 | 410 |
| FC | FRONT CENTER (mm) | 570 | 574 | 574 | 591 | 608 |
| WB | WHEELBASE (mm) | 969 | 973 | 973 | 990 | 1008 |
| F | FORK RAKE (mm) | 48 | 48 | 44 | 44 | 44 |
Q&A
Have a question about this? Ask the staff.
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