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Megamo Pulse SL vs Storck Aerfast.4 Comp
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 Storck Aerfast.4 Comp starts €100 cheaper (€3,399 vs €3,499 for the Megamo Pulse SL).
- Our verdict scores the Megamo Pulse SL higher overall: 77/100 vs 72/100.
- Tire clearance: up to 34 mm on the Megamo Pulse SL vs 28 mm on the Storck Aerfast.4 Comp.
- The Megamo Pulse SL comes in 5 sizes, the Storck Aerfast.4 Comp in 6.
Megamo Pulse SL
Storck Aerfast.4 Comp
| MegamoPulse SL | StorckAerfast.4 Comp | |
|---|---|---|
| Overview | ||
| Brand | Megamo | Storck |
| Build | Pulse 03 CW LTD | Aerfast.4 Comp 105 (11-speed) |
| Build notes | Top SL build, a limited edition. Dura-Ace Di2 shifting and power-meter crankset with an Ultegra cassette. UK price on megamo.com with the United Kingdom region selected. | Colour Matt Black; 11-speed Shimano 105 R7000 with DT Swiss PR 1600 Spline 32 alloy wheels. MSRP €3,399; Storck showed it reduced to €2,999 on 2 Nov 2026. Price from Storck's own web shop (EUR only). No power meter. |
| Price (MSRP) | €5,999€5,999£6,199 | €3,399€3,399€3,399 |
| Model year | 2027 | 2026 |
| Generation | Pulse MY27 | Aerfast.4 (fourth generation) |
| Launched | 2026-07 | 2021 |
| Newer generation | — | Aerfast.5 (2024) |
| Discipline | Aero road | Aero road |
| UCI legal | Not stated | Yes |
| Verdict (out of 100) | ||
| Overall score | 77 | 72 |
| Aero | 84 | 85 |
| Frame | 74 | 64 |
| Components | 72 | 58 |
| Fit | 66 | 72 |
| Practicality | 70 | 58 |
| Price | 97 | 97 |
| Frame & fork | ||
| Frame material | Carbon (Pulse Carbon Advanced Composite, SL 'Super Light' layup) | Carbon (CFR/UD), Comp grade |
| Fork material | Carbon (Pulse Carbon Advanced Composite fork; two fork versions across the size range keep trail the same) | — |
| Frame weight | — | 950 g33.5 oz |
| Fork weight | — | 500 g17.6 oz |
| Frameset weight | — | 1,900 g4.19 lb |
| Weight measured on | Megamo publishes no separate frame weight for the SL layup; its 924 g claim (size M, ready to paint) is reported for the SLR frame. | Storck's 'from' weights on its Aerfast.4 Platinum and Pro frameset pages (frame, fork, one-piece cockpit; frameset includes seatpost and headset); not split by grade or size |
| Max system weight | — | 120 kg264.6 lb |
| Frame sizes | XS, S, M, L, XL | XS, S, M, L, XL |
| Colours | Marble White, Mamba Black, Violet Mist | Matt Black |
| Also available as | Pulse SLR frame: same geometry in Megamo's lighter top layup (Pulse 00, 01, 02, 04 and 07 SLR builds and the frameset) | Aerfast.4 Platinum, Pro, Comp and Red Edition (frame classes of the same design, same geometry); succeeded by the Aerfast.5 |
| UCI frame approval | — | On the UCI list of approved framesets as 'AERFAST.3 / AERFAST.4' (code STOR-AEF), approved 8 Feb 2023 in sizes XS-XXL (6) (UCI list version 2026.10.02); the list doesn't distinguish the grades |
| Compatibility & standards | ||
| Brake type | Hydraulic disc, flat mount | Hydraulic disc, flat mount (160 mm rotors front and rear as built) |
| Wheel size | 700c | — |
| Max tire width | 34 mm | 28 mm |
| Bottom bracket standard | T47 | Press-fit, 41 mm bearing bore x 86.5 mm |
| Front axle | 12x100 thru-axle | — |
| Rear axle | 12x142 thru-axle | — |
| Cable routing | Fully internal, including through the head tube and cockpit | Internal through the one-piece cockpit |
| Fit & adjustability | ||
| Cockpit | One-piece Megamo Velora Carbon Aero bar and stem with internal routing and an integrated Garmin/Wahoo mount | One-piece Storck RBSU Aerfast.4 bar and stem, one size per frame size |
| Seatpost type | Megamo aero carbon seatpost with an integrated clamp that takes round and oval carbon rails | Storck Aerfast.4 carbon aero seatpost |
| Fit notes | Bar width and stem length are matched to frame size on the stock builds (360-400 mm at the hoods, 80-120 mm stems). Inverted spacers let the cockpit height change without losing the integration. | Each frame size comes with one cockpit size, from 380 mm bar / 90 mm stem (XS) to 440 / 120 mm (XXL). Storck says a computer mount and triathlon extensions can be retrofitted, and lists its TT kit as compatible with the Aerfast.4. |
| Aerodynamics | ||
| Manufacturer aero claims | Megamo says drag reduction focused on crosswinds of 2.5 to 10 degrees of yaw and the frame, fork, head tube and cockpit were developed as one system; it publishes no drag or watt figures for this generation. | Storck says the Aerfast.4 measured 199 W at 45 km/h in TOUR's wind-tunnel test; TOUR's own figures were 201 W for the Pro Disc and 202 W for the Comp Disc |
| Testing method | — | Wind tunnel |
| Tube profile | Wide-stance fork, deep-section head tube and chainstays, aero seatpost | 80 mm wide aero fork with a camtail trailing edge |
| Travel, maintenance & warranty | ||
| Derailleur hanger | UDH (SRAM Universal Derailleur Hanger) | — |
| Proprietary parts | One-piece Velora cockpit, aero seatpost and integrated seat clamp | RBSU Aerfast.4 one-piece cockpit, Aerfast.4 seatpost and headset |
| Frame warranty | Lifetime frame and rigid-fork warranty for the original buyer who registers the bike within 30 days at an authorised Megamo dealer; racing use counts as improper use | — |
| Sold via | Megamo dealers | Direct from Storck's web shop and Storck stores |
| Drivetrain | ||
| Groupset | Shimano Dura-Ace Di2 R9200 | Shimano 105 R7000 |
| Launched | 2021 · current generation | 2018 · replaced by Shimano 105 R7100 (2023) |
| Speeds | 12-speed | 11-speed |
| Electronic | Yes | No |
| Drivetrain | 2x | 2x |
| Shifters | Shimano Dura-Ace Di2 ST-R9270 | Shimano 105 R7000 |
| Notes | — | Mechanical shift and hydraulic brake levers |
| Crankset | Shimano Dura-Ace R9200-P (power meter) | Shimano 105 R7000 |
| Chainrings | 52/36 | 50/34 |
| Crank lengths available | 165 mm (XS), 170 mm (S), 172.5 mm (M-L), 175 mm (XL) | 170 mm (XS-S), 172.5 mm (M-L), 175 mm (XL-XXL) |
| Power meter | Shimano Dura-Ace R9200-P | — |
| Launched | 2021 · current generation | — |
| Type | Integrated in crankset | — |
| Bottom bracket | — | Storck Press-fit 41 x 86.5 mm |
| Standard | — | Press-fit, 41 mm bearing bore x 86.5 mm |
| Front derailleur | Shimano Dura-Ace Di2 R9250 | — |
| Rear derailleur | Shimano Dura-Ace Di2 R9250 | Shimano 105 R7000 |
| Cassette | Shimano Ultegra R8100 | Shimano 105 R7000 |
| Range | 11-34 | 11-30 |
| Speeds | 12-speed | 11-speed |
| Chain | — | Shimano CN-HG601 |
| Brakes | ||
| Brake calipers | Shimano Dura-Ace BR-R9270 | Shimano 105 |
| Type | Hydraulic disc | Hydraulic disc, flat mount |
| Notes | — | 160 mm rotors front and rear |
| Rotors | Shimano Dura-Ace RT-MT900 | — |
| Front rotor | 160 mm | — |
| Rear rotor | 140 mm | — |
| Wheels & tires | ||
| Wheelset | Zipp 404 S | DT Swiss PR 1600 Spline 32 |
| Front rim depth | 50 mm | 32 mm |
| Rear rim depth | 50 mm | 32 mm |
| Material | Carbon | Aluminium |
| Tubeless ready | Yes | — |
| Tires | Pirelli P Zero Race TLR RS | Continental Grand Prix TR |
| Tire width | 30 mm | 25 mm |
| Cockpit | ||
| Handlebar | Megamo Velora Carbon Aero | Storck RBSU Aerfast.4 |
| Type | One-piece carbon bar and stem | One-piece bar and stem |
| Integrated stem | Yes | Yes |
| Widths available | 360 mm (XS), 380 mm (S-M), 400 mm (L-XL) at the hoods; 377, 397 and 417 mm at the drops | 380 mm / 90 mm stem (XS), 400/100 (S), 420/100 (M-L), 420/110 (XL), 440/120 (XXL) |
| Bar reach | 75 mm | — |
| Bar drop | 125 mm | — |
| Flare | 6° | — |
| Cable routing | Fully internal | — |
| Material | Carbon | — |
| Weight | 295 g10.4 oz | — |
| Notes | Megamo's build lists call it 'Megamo Carbon Full Integrated'; stem length by size 80 mm (XS), 90 mm (S), 100 mm (M), 110 mm (L), 120 mm (XL), stem angle 10 degrees, with an integrated Garmin/Wahoo mount. Weight is Megamo's ready-to-paint claim. | — |
| Headset | — | Storck Aerfast.4 integrated headset |
| Saddle & seatpost | ||
| Saddle | Selle Italia SLR Elite Road | Selle San Marco Shortfit 2.0 |
| Seatpost | Megamo Aerodynamic Advanced Carbon Seat Post | Storck Aerfast.4 Carbon |
| Material | Carbon | Carbon |
| Weight | 213 g7.5 oz | — |
| Notes | 315 mm long on XS-S, 365 mm on M-XL. Weight is Megamo's ready-to-paint claim. | — |
| Bar tape | — | Storck Microfibre |
| Notes | — | Black |
| Geometry (smallest – largest size) | ||
| Sizes | XS, S, M, L, XL | XS, S, M, L, XL, XXL |
| Rider height min | 155–184 cm5′1″–6′0″ | 152–188 cm5′0″–6′2″ |
| Rider height max | 165–200 cm5′5″–6′7″ | 166–190 cm5′5″–6′3″ |
| Stack | 503–581 mm19.8–22.9″ | 482–576 mm19–22.7″ |
| Reach | 373–402 mm14.7–15.8″ | 362.5–418 mm14.3–16.5″ |
| Seat tube angle | 74–74.5° | 73° |
| Head tube angle | 71.5–72.5° | 70–72° |
| Head tube length | 95–173 mm3.7–6.8″ | 85–170 mm3.3–6.7″ |
| Effective top tube | 512–568 mm20.2–22.4″ | 510–595 mm20.1–23.4″ |
| Seat tube length | 460–540 mm18.1–21.3″ | 458–583 mm18–23″ |
| Chainstay | 410 mm16.1″ | 410 mm16.1″ |
| Wheelbase | 972–1,014 mm38.3–39.9″ | — |
| BB drop | 75–77 mm3–3″ | — |
| Wheel size | 700c | — |
| Crank length | — | 170–175 mm6.7–6.9″ |
| Stem length | 80–120 mm3.1–4.7″ | 90–120 mm3.5–4.7″ |
| Handlebar width | 360–400 mm14.2–15.7″ | 380–440 mm15–17.3″ |
| Handlebar reach | 75 mm3″ | — |
| Handlebar drop | 125 mm4.9″ | — |
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).