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A2 Bikes SP vs Ceepo Mamba-R Triathlon
Pick up to 4 bikes. Rows line up component by component. Highlighted rows differ, and green marks the best value where lower or higher is clearly better.
Key differences
- The Ceepo Mamba-R Triathlon starts $1,015 cheaper ($2,100 vs $3,115 for the A2 Bikes SP).
- The A2 Bikes SP comes in 4 sizes, the Ceepo Mamba-R Triathlon in 5.
A2 Bikes SP
Ceepo Mamba-R Triathlon
| A2 BikesSP | CeepoMamba-R Triathlon | |
|---|---|---|
| Overview | ||
| Brand | A2 Bikes | Ceepo |
| Build | SP Shimano 105 | Mamba-R frameset |
| Build notes | Drop #1 (fall 2026) build, sold in Matte Black only; the product page lists the shifters as Shimano Dura-Ace 11-speed (bar-end) and the wheels as Vision Team 30 alloy, tubeless-ready. Claimed complete weight 21.0 lb (size not stated). A2 says this build comes with black bar tape and a fully black chainstay area, unlike the photos. Sold out in Drop #1; Drop #2 opens on 12 October 2026. | Sold as a frameset kit (frame, fork, reversible seatpost, FSA SMR stem and headset, plus thru-axles, seat clamp and Di2 battery adaptor). The USD price is from the 'Mamba-R Frameset Kit' listing in Ceepo's own online shop (excluding VAT and duties); the same frameset is sold as the road Mamba-R. That listing names older colours (Glossy Blue, Hirro Fade, White, Chameleon, Pink) and a 30-53T chainring range, so confirm the current version with a dealer. |
| Price (MSRP) | $3,115$3,115$3,115 | $2,100$2,100$2,100 |
| Bike weight | 9.53 kg21 lb | — |
| Model year | 2026 | 2026 |
| Generation | SP (launched 2022, replaces the rim-brake Speed Phreak) | Mamba-R (fully integrated cabling, FSA SMR stem) |
| Launched | 2022-03 | — |
| Discipline | Triathlon | Triathlon |
| UCI legal | Not stated | Yes |
| Verdict (out of 100) | ||
| Overall score | 73 | — |
| Aero | 64 | 62 |
| Frame | 68 | 78 |
| Components | 72 | — |
| Hydration & storage | 45 | 40 |
| Fit | 82 | 65 |
| Practicality | 78 | 85 |
| Price | 100 | — |
| Frame & fork | ||
| Frame material | Hand-laid Toray T700 carbon fibre | Carbon (Toray, Optimized Strength Modulus Carbon) |
| Fork material | — | Carbon (one-piece fork) |
| Frame weight | 1,250 g2.76 lb | 1,120 g2.47 lb |
| Fork weight | — | 450 g15.9 oz |
| Weight measured on | Size M, painted (A2 claim) | Frame size M unpainted; fork with uncut 300 mm steerer, unpainted (Ceepo) |
| Frame sizes | S, M, L, XL | XS, S, M, L, XL |
| Colours | Oswego Blue, Summit Gray, Matte Black (fall 2026 colour drop; the Shimano 105 build only in Matte Black) | Chromatic Aberration, Dazzling Black |
| UCI frame approval | — | Approved 16 Jul 2018 as 'MAMBA R' (frame and fork; the entry also names 'STINGER R'), road category, sizes XS-XL (5), code CEEP-MAMB-RD (UCI list version 2026.10.02); the list does not say whether this covers the current SMR-stem version |
| UCI configuration | — | Ceepo states the Mamba-R is UCI certified |
| Compatibility & standards | ||
| Brake type | Disc | Flat-mount disc |
| Max rotor size | — | 160 mm |
| Wheel size | 700c | 700c |
| Max tire width | — | 35 mm |
| Bottom bracket standard | PF30 | BB386EVO |
| Front axle | 12 mm thru-axle | 12x100 mm thru-axle (M12 x 1.5) |
| Rear axle | 12 mm thru-axle | 12x142 mm thru-axle (M12 x 1.5) |
| Drivetrain compatibility | Sold with Shimano 105 mechanical 11-speed or SRAM Rival, Force and Red AXS wireless 12-speed | Shimano Di2 and mechanical, SRAM eTap AXS and mechanical, Campagnolo EPS and mechanical, Classified PowerShift, FSA K-Force WE |
| Mechanical shifting possible | Yes | Yes |
| 1x compatible | — | Yes |
| Max chainring | — | 54T |
| Cable routing | Fully internal cables and hoses | Fully internal through the FSA SMR stem and headset |
| Hydration & storage | ||
| Integrated storage | — | No |
| Fit & adjustability | ||
| Aerobar system | A2 SAGS (Super Adjustable Gooseneck) stem, set to 70, 90 or 110 mm with A2's spacers, with a Vision TriMax SI-013 carbon aerobar (Force and Red builds) or a Zipp Vuka Alumina aerobar (105 and Rival builds) | — |
| Pad stack adjustment range | Riser spacers up to 70 mm on the Force and Red builds; a 25 mm and a 50 mm spacer (up to 50 mm) on the 105 and Rival builds | — |
| Pad reach adjustment range | 140 mm of fore/aft pad adjustment (A2 states 120 mm on the Rival build page) plus the 70/90/110 mm stem settings | — |
| Extension options | Ski-bend extensions with tool-free angle adjustment | — |
| Seatpost type | A2 SASP (Super Adjustable Seat Post) with a sliding head | Reversible carbon Wide Range Seatpost |
| Saddle position range | Up to 120 mm of saddle travel on the SASP head | — |
| Fit notes | Product pages give a rider range of about 155-193 cm (5'1" to 6'4"); the size guide's cards run from 160 cm (S) to 196 cm (XL). A2 offers a free remote fit call and free size exchanges within 30 days. | Road geometry (seat angle 74-76 degrees depending on size); the reversible seatpost moves the saddle forward for a tri position. 2x chainrings from 50/34 to 54/40, 1x from 34T to 54T. FSA SMR stem 80 mm (XS, S), 90 mm (M), 100 mm (L) or 110 mm (XL). The SMR system allows up to 25 mm of stem spacers, using two-piece spacers that can be fitted or removed without re-cabling. |
| Aerodynamics | ||
| Manufacturer aero claims | A2 says the disc-brake SP saved 5 W in the wind tunnel against its rim-brake predecessor, the Speed Phreak | Truncated, tapered airfoil tubes, lowered seatstays, a one-piece fork that blends into the frame and hidden cables (no figures published). |
| Testing method | CFD and wind tunnel (A2 statement; no figures published) | — |
| Tube profile | Truncated-airfoil (kammtail) down tube, seat tube and fork | Truncated airfoil tubes |
| Travel, maintenance & warranty | ||
| Headset bearings | — | FSA No.55R 1.5" ACR headset |
| Derailleur hanger | Proprietary (SP derailleur hanger sold by A2) | — |
| Maintenance | Ships 92% assembled: the buyer fits the seatpost and cockpit and adjusts the brakes with the included 5 Nm torque wrench and A2's video guide (A2 also recommends a 10 Nm wrench). A2 says most shops finish the build for USD 50-150. | — |
| Proprietary parts | SAGS stem, SASP seatpost and derailleur hanger | Seatpost; otherwise off-the-shelf parts (FSA headset and SMR stem) |
| Frame warranty | Limited lifetime frameset warranty for the original owner (not transferable); crash damage is covered by a crash replacement policy giving 30% off a new frame | 3 years from purchase on the frameset, original owner with dated proof of purchase |
| Sold via | Direct from A2 Bikes in Portland, Oregon (USD 99 flat shipping to the lower 48 states), sold in limited colour drops; a few preferred dealers and demo bikes | — |
| Drivetrain | ||
| Groupset | Shimano 105 R7000 | — |
| Launched | 2018 · replaced by Shimano 105 R7100 (2023) | — |
| Speeds | 11-speed | — |
| Electronic | No | — |
| Drivetrain | 2x | — |
| Shifters | Shimano Dura-Ace bar-end | — |
| Position | Extensions (11-speed bar-end shifters) | — |
| Crankset | Shimano RS520 | — |
| Chainrings | 50/34 | — |
| Bottom bracket | PF30 | — |
| Standard | PF30 | — |
| Front derailleur | Shimano 105 R7000 | — |
| Rear derailleur | Shimano 105 R7000 | — |
| Cassette | Shimano 105 R7000 | — |
| Range | 11-30 | — |
| Speeds | 11-speed | — |
| Chain | Shimano 11-speed | — |
| Brakes | ||
| Brake calipers | TRP Spyre | — |
| Type | Mechanical disc | — |
| Rotors | Shimano 140 mm rotors | — |
| Front rotor | 140 mm | — |
| Rear rotor | 140 mm | — |
| Wheels & tires | ||
| Wheelset | Vision Team 30 | — |
| Material | Aluminium | — |
| Tubeless ready | Yes | — |
| Tires | Vittoria Zaffiro | — |
| Tire width | 25 mm | — |
| Cockpit | ||
| Aerobar system | Zipp Vuka Alumina | — |
| Integrated with frame | No | — |
| Extension shape | Ski-bend, tool-free angle adjustment | — |
| Pad stack adjustment | 25 mm and 50 mm spacers included (up to 50 mm) | — |
| Material | Aluminium | — |
| Stem | A2 Bikes SAGS | FSA SMR |
| Stem length | 70, 90 or 110 mm with A2's spacers | 80 (XS, S), 90 (M), 100 (L), 110 (XL) |
| Headset | — | FSA No.55R 1.5 in ACR |
| Saddle & seatpost | ||
| Saddle | WTB Rocket | — |
| Seatpost | A2 Bikes SASP | Ceepo Wide Range Seatpost (reversible) |
| Saddle position range | Up to 120 mm of saddle travel on the sliding head | — |
| Material | — | Carbon |
| Geometry (smallest – largest size) | ||
| Sizes | S, M, L, XL | XS, S, M, L, XL |
| Rider height min | 160–190 cm5–6′3″ | — |
| Rider height max | 167.5–196 cm5′6″–6′5″ | — |
| Stack | 460–560 mm18.1–22″ | 493–582 mm19.4–22.9″ |
| Reach | 371–439 mm14.6–17.3″ | 378–402 mm14.9–15.8″ |
| Seat angle min | 78° | 74–76° |
| Seat angle max | 78° | 74–76° |
| Head tube angle | 73° | 71.5–72.5° |
| Head tube length | 53–157.5 mm2.1–6.2″ | 85–175 mm3.3–6.9″ |
| Effective top tube | — | 500–580 mm19.7–22.8″ |
| Seat tube length | 500–580 mm19.7–22.8″ | 430–550 mm16.9–21.7″ |
| Chainstay | 410 mm16.1″ | 408 mm16.1″ |
| Wheelbase | 940–1,038 mm37–40.9″ | 965.4–1,010.4 mm38–39.8″ |
| BB drop | 70 mm2.8″ | 70 mm2.8″ |
| Fork offset | — | 43 mm1.7″ |
| Front centre | 540–638 mm21.3–25.1″ | 567.9–612.6 mm22.4–24.1″ |
| Standover | — | 708–826 mm27.9–32.5″ |
| Wheel size | 700c | 700c |
| Stem length | — | 80–110 mm3.1–4.3″ |
Geometry overlay
Pick a size for each bike to see frames and arm-pad ranges on top of each other.
Drawn to scale (how to read it).