A2 BikesSP
A2 Bikes' SP is the second generation of the Speed Phreak, the direct-to-consumer carbon triathlon bike from Portland, Oregon. Designed with Kevin Quan Studios, it has a 1,250 g Toray T700 frame with kammtail tubes, fully internal routing, disc brakes and 12 mm thru-axles. Fit comes from A2's own parts: the SAGS gooseneck stem set to 70, 90 or 110 mm with spacers and the SASP seatpost whose head slides the saddle up to 120 mm. One frame carries every build, from mechanical Shimano 105 on alloy wheels to SRAM Red AXS on Zipp 808s, sold in limited colour drops and shipped 92% assembled.
- From
- $3,115$3,115$3,115
- Builds
- 4
- Sizes
- 4
- Frame weight
- 1,250 g2.76 lb
Design sketch, generated from the manufacturer's photo
Our verdict
Overall
out of 100, average of 7 categories
A direct-to-consumer tri bike for athletes who want a light carbon frame, a wide fit window and SRAM wireless shifting for less than the big brands charge, with a lifetime warranty and crash replacement. You give up any integrated hydration or storage, published aero data and a dealer network, and you finish the assembly yourself.
Scored Oct 2026
- + Affordable way in
- + Wide fit adjustment
- − Little integrated hydration or storage
AI-drafted from the specs on this page and reviewed before publishing. Scores are relative to every bike in the catalog when they were given, so they drop as newer bikes and parts raise the bar.
- Aero
- 64/100
- Frame
- 68/100
- Components
- 72/100
- Hydration & storage
- 45/100
- Fit
- 82/100
- Practicality
- 78/100
- Price
- 100/100
Aero claims and front-end integration
Carbon grade, weight and warranty
Groupset, wheels and power meter
Hydration and storage in the frame
Sizes and adjustment range
Travel, standard parts, servicing
From the cheapest complete-bike MSRP
Bike duel
Reviews
3 independent reviews of the A2 Bikes SP.
- Written
Triathlete
Reviewed: A2 Bikes SP 1.3 SRAM Force AXSJon DornTested: SP 1.3 SRAM Force AXS (XL, Zipp 404 wheels) - Written
Triathlete
Reviewed: A2 Bikes’ New SP1.2Chris FosterTested: SP1.2 Ultegra mechanical (XL)3/5 - WrittenChris FosterTested: SP1.2 Ultegra mechanical
Frame & platform
Frame & fork
- Frame material
- Hand-laid Toray T700 carbon fibre
- Frame weight
- 1,250 g2.76 lb
- Weight measured on
- Size M, painted (A2 claim)
- Frame sizes
- S, M, L, XL
- Colours
- Oswego Blue, Summit Gray, Matte Black (fall 2026 colour drop; the Shimano 105 build only in Matte Black)
Compatibility & standards
- Brake type
- Disc
- Wheel size
- 700c
- Bottom bracket standard
- PF30
- Front axle
- 12 mm thru-axle
- Rear axle
- 12 mm thru-axle
- Drivetrain compatibility
- Sold with Shimano 105 mechanical 11-speed or SRAM Rival, Force and Red AXS wireless 12-speed
- Mechanical shifting possible
- Yes
- Cable routing
- Fully internal cables and hoses
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
- 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.
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
- Testing method
- CFD and wind tunnel (A2 statement; no figures published)
- Tube profile
- Truncated-airfoil (kammtail) down tube, seat tube and fork
Travel, maintenance & warranty
- 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
- 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
- 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
Photos
Design sketches
Builds & components
Highlighted rows differ between builds. Green marks the best value.
SP Shimano 105 | SP SRAM Rival AXS | SP SRAM Force AXS | SP SRAM Red AXS | |
|---|---|---|---|---|
| Overview | ||||
| Price (MSRP) | $3,115$3,115$3,115 | $4,999$4,999$4,999 | $7,199$7,199$7,199 | $8,999$8,999$8,999 |
| Weight | 9.53 kg21 lb | 9.07 kg20 lb | 9.07 kg20 lb | 8.16 kg18 lb |
| Type | Complete bike | Complete bike | Complete bike | Complete bike |
| 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. | Drop #1 (fall 2026) build in Summit Gray, Matte Black or Oswego Blue. The spec table lists the derailleurs and crankset as Rival eTap AXS D1 while the description calls it the latest Rival AXS released in late 2025, so no generation marker is given here. Brakes are listed as Ride Rever Triva alloy hydraulic with Shimano RT-64 140 mm rotors. Claimed complete weight 20.0 lb (size not stated). Add-ons at checkout: Rival AXS power meter crankset or left-arm spindle, Garmin Rally pedals, and XLAB/Profile Design race-day packages. Sold out in Drop #1; Drop #2 opens on 12 October 2026. | Drop #1 (fall 2026) build in Oswego Blue, Matte Black or Summit Gray. The brakes are listed only as RideRever hydraulic. A2 states the Zipp 404 Firecrest wheels come as standard and offers the Zipp 808 Firecrest tubeless disc wheelset for USD 595 more at checkout. Claimed complete weight 20.0 lb (size not stated). This is the build Triathlete tested in 2025 as the SP 1.3 Force AXS. Sold out in Drop #1; Drop #2 opens on 12 October 2026. | Drop #1 (fall 2026) top build in Oswego Blue or Summit Gray. Claimed complete weight 18.0 lb (size not stated). A Red AXS power meter crankset or Garmin Rally pedals can be added at checkout. Sold out in Drop #1; Drop #2 opens on 12 October 2026. |
| Drivetrain | ||||
| Groupset | Shimano 105 R7000 | SRAM Rival AXS | SRAM Force AXS E1 | SRAM Red AXS E1 |
| Launched | 2018 · replaced by Shimano 105 R7100 (2023) | — | 2025 · current generation | 2024 · current generation |
| Speeds | 11-speed | 12-speed | 12-speed | 12-speed |
| Electronic | No | Yes | Yes | Yes |
| Wireless | — | Yes | Yes | Yes |
| Drivetrain | 2x | 2x | 2x | 2x |
| Shifters | Shimano Dura-Ace bar-end | SRAM AXS Wireless Blips | SRAM AXS Wireless Blips | SRAM AXS Wireless Blips |
| Position | Extensions (11-speed bar-end shifters) | Extensions (Leap Components integrated blips) and basebar | Extensions (Leap Components integrated blips) and basebar | Extensions (Leap Components integrated blips) and basebar |
| Crankset | Shimano RS520 | SRAM Rival AXS | SRAM Force AXS E1 | SRAM Red AXS E1 |
| Chainrings | 50/34 | 48/35 | 48/35 | 48/35 |
| Bottom bracket | PF30 | SRAM DUB PF30 | SRAM DUB PF30 | SRAM DUB PF30 |
| Standard | PF30 | PF30 | PF30 | PF30 |
| Front derailleur | Shimano 105 R7000 | SRAM Rival AXS | SRAM Force AXS E1 | SRAM Red AXS E1 |
| Rear derailleur | Shimano 105 R7000 | SRAM Rival AXS | SRAM Force AXS E1 | SRAM Red AXS E1 |
| Cassette | Shimano 105 R7000 | SRAM Rival | SRAM Force | SRAM Red E1 |
| Range | 11-30 | 10-30 | 10-30 | 10-30 |
| Speeds | 11-speed | 12-speed | 12-speed | 12-speed |
| Chain | Shimano 11-speed | SRAM Rival Flattop | SRAM Force Flattop | SRAM Red Flattop |
| Brakes | ||||
| Brake calipers | TRP Spyre | Rever Triva | Rever Hydraulic disc | TRP HD-T910 |
| Type | Mechanical disc | Hydraulic disc (alloy) | Hydraulic disc | Hydraulic disc |
| Rotors | Shimano 140 mm rotors | Shimano SM-RT64 | SRAM Paceline | SRAM Paceline |
| Front rotor | 140 mm | 140 mm | 140 mm | 140 mm |
| Rear rotor | 140 mm | 140 mm | 140 mm | 140 mm |
| Wheels & tires | ||||
| Wheelset | Vision Team 30 | HED Vanquish V62 | Zipp 404 Firecrest | Zipp 808 Firecrest |
| Front rim depth | — | 62 mm | 58 mm | 82 mm |
| Rear rim depth | — | 62 mm | 58 mm | 82 mm |
| Material | Aluminium | Carbon | Carbon | Carbon |
| Tubeless ready | Yes | Yes | — | Yes |
| Tires | Vittoria Zaffiro | Continental Grand Prix 5000 | Schwalbe Pro One | Goodyear Eagle F1 SuperSport R |
| Tire width | 25 mm | 28 mm | 25 mm | 25 mm |
| Cockpit | ||||
| Aerobar system | Zipp Vuka Alumina | Zipp Vuka Alumina | Vision TriMax SI-013 | Vision TriMax SI-013 |
| Integrated with frame | No | No | No | No |
| Extension shape | Ski-bend, tool-free angle adjustment | Ski-bend, tool-free angle adjustment | Ski-bend, tool-free angle adjustment | Ski-bend, tool-free angle adjustment |
| Pad stack adjustment | 25 mm and 50 mm spacers included (up to 50 mm) | 25 mm and 50 mm spacers included (up to 50 mm) | Up to 70 mm of riser stack | Up to 70 mm of riser stack |
| Material | Aluminium | Aluminium | Carbon | Carbon |
| Stem | A2 Bikes SAGS | A2 Bikes SAGS | A2 Bikes SAGS | A2 Bikes SAGS |
| Stem length | 70, 90 or 110 mm with A2's spacers | 70, 90 or 110 mm with A2's spacers | 70, 90 or 110 mm with A2's spacers | 70, 90 or 110 mm with A2's spacers |
| Saddle & seatpost | ||||
| Saddle | WTB Rocket | BiSaddle Hurricane Chromoly | BiSaddle Hurricane Titanium | BiSaddle Hurricane Titanium |
| Widths available | — | Adjustable from 100 to 175 mm | Adjustable from 100 to 175 mm | Adjustable from 100 to 175 mm |
| Rails | — | Chromoly | Titanium | Titanium |
| Seatpost | A2 Bikes SASP | A2 Bikes SASP | A2 Bikes SASP | A2 Bikes SASP |
| Saddle position range | Up to 120 mm of saddle travel on the sliding head | Up to 120 mm of saddle travel on the sliding head | Up to 120 mm of saddle travel on the sliding head | Up to 120 mm of saddle travel on the sliding head |
SP price & value
Spare & upgrade parts from A2 Bikes
| Part | Part number | Price |
|---|---|---|
| SP derailleur hangerHanger only; reuses the stock M4 x 10 mm socket-head bolt (not included). | — | $50$50$50 |
| A2 SAGS stem (SP version)Set to 70, 90 or 110 mm with its integrated spacers. The Speed Phreak version costs USD 300 and needs a new fork on the original bike. | — | $200$200$200 |
Real-world weight
Scale weights of the SP from reviewers, next to A2 Bikes's claim.
| What | Measured | Claimed | Measured by |
|---|---|---|---|
| Complete bikeSize XL · SP1.2 Ultegra mechanical build (discontinued) with Vision training wheels, as tested in 2022 | 10.04 kg22.1 lb | — | Triathlete2022-03 |
Ownership checklist
1 of 4 known checks pass, 3 not published by A2 Bikes. Why these checks
- ✕
Threaded bottom bracket
PF30
- ✕
UDH derailleur hanger
Proprietary (SP derailleur hanger sold by A2)
- ✕
Standard 12×142 mm rear axle
12 mm thru-axle
- ✓
Works with mechanical shifting
- ?
Fits third-party aerobars
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)
- ?
Rear disc wheel compatible
- ?
Fit kept when packed
SP geometry
| S | M | L | XL | |
|---|---|---|---|---|
| Rider height min | 160 cm5′3″ | 170 cm5′7″ | 180 cm5′11″ | 190 cm6′3″ |
| Rider height max | 167.5 cm5′6″ | 178 cm5′10″ | 188 cm6′2″ | 196 cm6′5″ |
| Stack | 460 mm18.1″ | 493 mm19.4″ | 527 mm20.7″ | 560 mm22″ |
| Reach | 371 mm14.6″ | 394 mm15.5″ | 416 mm16.4″ | 439 mm17.3″ |
| Seat angle min | 78° | 78° | 78° | 78° |
| Seat angle max | 78° | 78° | 78° | 78° |
| Head tube angle | 73° | 73° | 73° | 73° |
| Head tube length | 53 mm2.1″ | 87.5 mm3.4″ | 123 mm4.8″ | 157.5 mm6.2″ |
| Seat tube length | 500 mm19.7″ | 520 mm20.5″ | 540 mm21.3″ | 580 mm22.8″ |
| Chainstay | 410 mm16.1″ | 410 mm16.1″ | 410 mm16.1″ | 410 mm16.1″ |
| Wheelbase | 940 mm37″ | 972 mm38.3″ | 1,005 mm39.6″ | 1,038 mm40.9″ |
| BB drop | 70 mm2.8″ | 70 mm2.8″ | 70 mm2.8″ | 70 mm2.8″ |
| Front centre | 540 mm21.3″ | 573 mm22.6″ | 605 mm23.8″ | 638 mm25.1″ |
| Wheel size | 700c | 700c | 700c | 700c |
Side view & pad range
Drawn to scale (how to read it).
How the geometry rides
The SP in size M against the middle size of 42 other bikes: tendencies from geometry, not a ride review (how to read this).
- Wheelbase972 mm38.3″
shortestlonger than 5% of 42 bikeslongest
Short wheelbase: tends to feel more agile in corners and less planted on long straights.
- Front centre573 mm22.6″
shortestlonger than 0% of 29 bikeslongest
Short front centre: more weight on the front wheel, which can make the front feel lighter to steer.
- Chainstay410 mm16.1″
shortestlonger than 75% of 53 bikeslongest
Long chainstays: adds stability and room for a rear wheel with wide tyres.
Good to know
Aerodynamics
A2's only published aero figure is that the disc-brake SP saved 5 W compared with its rim-brake predecessor in the wind tunnel; no drag numbers or protocol are published.
SourceFit
Fit adjustment comes from A2's SAGS stem (70, 90 or 110 mm using its integrated spacers) and the SASP seatpost, whose head slides the saddle up to 120 mm. A2 quotes more than 140 mm of combined adjustment and says Triathlete's 6'6" tester set up a standard XL without aftermarket parts.
SourceFit
Triathlete found the stack range limiting: the aerobar risers top out at 70 mm, so the highest standard setting is still a fairly aggressive position, and the sliding seatpost head has to be taken apart (saddle off) to move it.
SourceFit
A2's size guide shows two sets of numbers: the size cards list seat tubes of 50/53/55/58 cm and an XL rider range of 6'3"-6'5", while the full geometry table lists 50/52/54/58 cm and 6'2"-6'5". The table is used here. Its 'top tube length' (46.9-55.8 cm) is not labelled as effective, so it is left out.
SourceIntegration
Nothing is built into the frame. Triathlete lists bosses on the top tube, down tube and both sides of the seat tube for cages, a bento box or Bontrager-compatible storage; A2 sells XLAB and Profile Design hydration and storage as race-day packages (Sprint & Olympic, 70.3, Ironman 140.6) at 20% off with a bike.
SourceCompatibility
The SRAM AXS builds use Leap Components integrated aerobar blips plus extra shift buttons on the basebar, replacing the older SRAM Blip Box for a fully wireless cockpit configured in the SRAM AXS app. A2 says the frame accepts standard wheelsets.
SourceRacing
A2 makes no statement about UCI approval and the SP is not on the UCI's approved-framesets list, so it should be treated as a triathlon-only bike.
SourceRacing
A2 Bikes was USA Triathlon's official bike partner for the 2023 and 2024 seasons, with the Speed Phreak (SP) as its flagship bike.
SourceHistory
A2's first bike, the rim-brake Speed Phreak, launched in 2017. In 2020 A2 hired Kevin Quan Studios to redesign it, and the resulting SP went on sale in 2022 after CFD work and wind-tunnel testing. A2 is based in Portland, Oregon and has its frames made in Taipei.
SourceVersions
At launch in March 2022 the line was named SP1.x by build: SP1.1 (105, USD 2,800), SP1.2 (Ultegra mechanical, USD 3,500, or USD 4,000 with hydraulic brakes), SP1.3 (Ultegra Di2, USD 6,000) and SP1.4 (Dura-Ace Di2 or SRAM Red, USD 8,000), all on the same frame. A2 now names the builds by groupset.
SourceVersions
A2 sells the SP in limited colour drops rather than a permanent range. Drop #1 (Oswego Blue, Summit Gray, Matte Black) sold out in autumn 2026 and Drop #2 opens on 12 October 2026. Discounted 'warehouse find' Rival and Force builds in Matte Black are listed separately; those are sale prices, not MSRP.
Source
SP FAQ
How much does the A2 Bikes SP cost?+
Manufacturer prices (MSRP): $3,115–$8,999 across 4 listed builds and framesets: SP Shimano 105, SP SRAM Rival AXS, SP SRAM Force AXS and SP SRAM Red AXS.
How much does the A2 Bikes SP weigh?+
The lightest complete build listed (SP SRAM Red AXS) weighs 8.16 kg (18 lb). The frame weighs 1,250 g (2.76 lb) (Size M, painted (A2 claim)).
What sizes does the A2 Bikes SP come in?+
4 sizes: S, M, L and XL. The manufacturer recommends them for riders from 160 cm (5′3″) to 196 cm (6′5″).
What seat angle does the A2 Bikes SP have?+
78° effective seat tube angle.
Which groupsets are compatible with the A2 Bikes SP?+
Drivetrain compatibility: Sold with Shimano 105 mechanical 11-speed or SRAM Rival, Force and Red AXS wireless 12-speed. Mechanical shifting can be fitted. Bottom bracket: PF30.
What builds of the A2 Bikes SP are available?+
SP Shimano 105: Shimano 105 R7000; SP SRAM Rival AXS: SRAM Rival AXS; SP SRAM Force AXS: SRAM Force AXS E1; SP SRAM Red AXS: SRAM Red AXS E1.
What warranty does the A2 Bikes SP frame have?+
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
Is the A2 Bikes SP aerodynamic?+
A2 says the disc-brake SP saved 5 W in the wind tunnel against its rim-brake predecessor, the Speed Phreak (CFD and wind tunnel (A2 statement; no figures published))
Sources
- https://a2bikes.com/products/sp-shimano-105-copy
- https://a2bikes.com/products/sp-sram-rival-axs-copy
- https://a2bikes.com/products/sp-sram-force-axs-copy
- https://a2bikes.com/products/sp-sram-red-axs-copy
- https://a2bikes.com/pages/size-guide
- https://a2bikes.com/pages/about
- https://a2bikes.com/pages/warranty
- https://a2bikes.com/pages/crash-replacement-policy
- https://a2bikes.com/pages/faqs
- https://a2bikes.com/products/a2-sags-stem
- https://a2bikes.com/products/sp-derailleur-hanger-replacement
- https://a2bikes.com/blogs/news/triathlete-magazines-a2-sp-rival-axs-first-look-article-feature
- https://www.triathlete.com/gear/bike/an-in-depth-look-at-a2-bikes-new-sp1-2-superbike/?scope=anon
- https://www.triathlete.com/gear/bike/reviewed-a2-bikes-sp-1-3-sram-force-axs/?scope=anon
- https://www.usatriathlon.org/articles/news/usa-triathlon-to-ride-through-2024-with-a2-bikes-official-bike-partner
- https://www.triathlete.com/gear/bike/reviewed-a2-bikes-new-sp1-2/?scope=anon
A2 Bikes SP data last updated · How the data is checked ·