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Basso SV vs KTM Revelator Alto Exonic
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 Basso SV starts €200 cheaper (€7,799 vs €7,999 for the KTM Revelator Alto Exonic).
- Our verdict scores the Basso SV higher overall: 82/100 vs 78/100.
- The KTM Revelator Alto Exonic's lightest build is 0.10 kg lighter (6.6 kg vs 6.7 kg).
- The Basso SV comes in 7 sizes, the KTM Revelator Alto Exonic in 5.
Basso SV
KTM Revelator Alto Exonic
| BassoSV | KTMRevelator Alto Exonic | |
|---|---|---|
| Overview | ||
| Brand | Basso | KTM |
| Build | SV Shimano Dura-Ace Di2 (Fulcrum Wind 57) | Revelator Alto Exonic AXS PM |
| Build notes | Configured to order: frame size, colour, crank length, chainrings, Fuga or Levita cockpit size and seatpost setback are chosen in Basso's configurator at no extra cost (Rosso Vivo paint and the silver Fuga cost extra). Basso doesn't list brakes, rotors, tyres or saddle for the builds. | 2027 model, Carbon Crystal Red (white). KTM's name and range text say it comes with a power meter, but the parts list names neither the crankset nor the power meter, brakes or rotors. KTM doesn't state the size of the claimed weight. Sold through KTM dealers. |
| Price (MSRP) | €10,599$13,495€10,599 | €7,999€7,999€7,999 |
| Bike weight | — | 6.6 kg14.6 lb |
| Model year | 2025 | 2027 |
| Generation | 2025 Sempre Veloce | 3rd edition |
| Launched | 2025-01 | 2022 |
| Discipline | Aero road | Aero road |
| UCI legal | Yes | Yes |
| Verdict (out of 100) | ||
| Overall score | 82 | 78 |
| Aero | 80 | 76 |
| Frame | 86 | 82 |
| Components | 88 | 88 |
| Fit | 90 | 66 |
| Practicality | 64 | 66 |
| Price | 68 | 67 |
| Weight | 100 | 100 |
| Frame & fork | ||
| Frame material | Carbon (Toray T1100 and T1000 fibres) | Carbon (Road Race Nano Premium Carbon, frame R4910) |
| Fork material | Carbon | Carbon (Revelator Alto Nano Carbon F15) |
| Frame weight | 780 g27.5 oz | — |
| Fork weight | 370 g13.1 oz | — |
| Weight measured on | Frame size 53, unpainted, without hardware (Basso); fork size not stated | — |
| Frame sizes | 45, 48, 51, 53, 56, 58, 61 | XS (49), S (52), M (55), L (57), XL (59) |
| Colours | Zenith White, Supernova, Élan White, Rosso Vivo (surcharge), Viola Galaxy, Pure Black | Carbon Crystal Red (white) |
| Also available as | — | Revelator Alto Prestige and Prime on the Premium Carbon frame (R3920), and Master, Elite, SuperPro and Pro on the Performance Carbon frame (R4930) |
| UCI frame approval | Approved 17 Apr 2026 as 'SV' (frame and fork), sizes 42-61 (8), code BASSO-014 (UCI list version 2026.10.02) | Approved 1 Jul 2022 as 'Revelator Alto' (frame and fork), sizes 49-59 (5), code KTM-REV8 (UCI list version 2026.10.02) |
| Compatibility & standards | ||
| Brake type | — | Hydraulic disc |
| Wheel size | — | 700c |
| Max tire width | 35 mm | — |
| Bottom bracket standard | 86.5 mm wide bottom bracket shell (type not stated by Basso; the launch press release says 85.6 mm) | — |
| Front axle | — | 12x100 mm thru-axle |
| Rear axle | — | 12x142 mm thru-axle |
| Drivetrain compatibility | Basso builds it with electronic groupsets only: Shimano Dura-Ace and Ultegra Di2, SRAM Red and Force AXS, and Campagnolo Record 13 (13-speed), all 2x | — |
| Fit & adjustability | ||
| Cockpit | One-piece carbon bar and stem: Basso Fuga (aero, narrow) or Levita (traditional bend with round tops) | One-piece carbon bar and stem (Vision Metron 5D ACR EVO) |
| Seatpost type | Basso carbon seatpost, 380 mm long, 15 mm or 0 mm setback, clamped by the hidden 3B Clamp System Gen II | KTM Prime Carbon Road Aero seatpost, 400 mm |
| Fit notes | 7 frame sizes with a high stack and a seat tube 25 mm shorter than Basso's traditional geometry. 18 one-piece cockpit sizes across the two designs (Basso's tech page says 16): Fuga 370 mm wide with 80-130 mm stems and 65 mm reach, Levita 400-440 mm with 90-130 mm stems and 76.7 mm reach. Six 5 mm split spacers are included. | — |
| Aerodynamics | ||
| Manufacturer aero claims | Frontal area 16% lower than the Diamante SV (24,993 mm² vs 29,754 mm²); the down tube is shaped around the front wheel, optimised for 28-35 mm tyres. | KTM says every detail was refined in the wind tunnel; no figures published. |
| Testing method | Basso quotes frontal area only; it publishes no wind-tunnel drag figures. TOUR notes it didn't wind-tunnel test the bike for its ride test. | — |
| Tube profile | Truncated airfoil (Kamm tail) on every tube | — |
| Travel, maintenance & warranty | ||
| Headset bearings | Microtech Solid Oil headset bearings with Basso's 34 g Ultra Torque expander | FSA ACR No.80/56 CRII, 1-1/8 in top, 1.5 in bottom |
| Proprietary parts | Fuga/Levita one-piece cockpit, seatpost and 3B clamp, thru axles (front 30 g, rear 38 g), headset expander | — |
| Frame warranty | 5 years on the carbon frame when the bike is registered (frames from 16 Jan 2025) | — |
| Sold via | Built to order through Basso dealers or ordered on bassobikes.com | Through KTM dealers |
| Drivetrain | ||
| Groupset | Shimano Dura-Ace Di2 | SRAM Red AXS E1 |
| Launched | — | 2024 · current generation |
| Speeds | — | 12-speed |
| Electronic | Yes | Yes |
| Wireless | — | Yes |
| Drivetrain | 2x | 2x |
| Shifters | Shimano Dura-Ace Di2 | SRAM Red AXS E1 HRD |
| Notes | Combined shift and hydraulic brake levers | Combined shift and hydraulic brake levers; KTM lists the right-hand lever as Red AXS HRD |
| Crankset | Shimano Dura-Ace | — |
| Chainrings | 50/34 or 52/36 | — |
| Crank lengths available | 170, 172.5 or 175 mm (chosen in the configurator; Basso adds 'if compatible') | — |
| Front derailleur | — | SRAM Red AXS E1 |
| Rear derailleur | — | SRAM Red AXS E1 |
| Cassette | Shimano Dura-Ace | SRAM Red XG-1290 |
| Range | 11-34 | 10-33 |
| Speeds | — | 12-speed |
| Chain | — | SRAM Red E1 |
| Wheels & tires | ||
| Wheelset | Fulcrum Wind 57 | Mavic Comete 45 Carbon |
| Material | Carbon | Carbon |
| Tubeless ready | — | Yes |
| Notes | — | 12 mm thru-axle hubs, 100/142 mm |
| Tires | — | Continental Grand Prix 5000 S TR |
| Tire width | — | 30 mm |
| Cockpit | ||
| Handlebar | Basso Fuga | Vision Metron 5D ACR EVO |
| Type | One-piece carbon bar and stem | One-piece bar and stem |
| Integrated stem | Yes | Yes |
| Bar width | 370 mm | — |
| Widths available | Fuga: 370 mm with 80-130 mm stems (6 sizes). Levita (round-top, traditional shape) can be chosen instead at no extra cost: 400, 420 or 440 mm with 90-130 mm stems (12 sizes) | — |
| Bar reach | 65 mm | — |
| Bar drop | 115 mm | — |
| Material | — | Carbon |
| Weight | 300 g10.6 oz | — |
| Notes | Stem length chosen in the configurator (100 mm by default). Weight for 100 x 370 mm. Basso's Fuga drawing also lists a 400 mm dimension and a 6° angle; Levita has 76.7 mm reach, 120 mm drop and weighs 330 g. A silver Fuga is offered at extra cost with the Rosso Vivo paint. | — |
| Headset | — | FSA ACR No.80/56 CRII 1-1/8 in / 1.5 in |
| Saddle & seatpost | ||
| Saddle | — | Selle Italia SLR Boost Superflow 3D Carbon |
| Seatpost | Basso Piuma | KTM Prime Carbon Road Aero |
| Offset / setback | 15 mm setback or 0 mm (chosen in the configurator) | — |
| Material | Carbon | Carbon |
| Weight | 180 g6.3 oz | — |
| Notes | 380 mm long; 3B Clamp System Gen II in the frame. Basso's tech page calls it the Diamante seatpost; weight for the 380 mm post | 400 mm |
| Bar tape | — | KTM KTM tape |
| Geometry (smallest – largest size) | ||
| Sizes | 45, 48, 51, 53, 56, 58, 61 | XS (49), S (52), M (55), L (57), XL (59) |
| Stack | 520–634 mm20.5–25″ | 519–571 mm20.4–22.5″ |
| Reach | 370–390 mm14.6–15.4″ | 361–396 mm14.2–15.6″ |
| Seat tube angle | 72.5–75.5° | 72.5–74° |
| Head tube angle | 71.2–74° | 71.5–72.5° |
| Head tube length | 115–218 mm4.5–8.6″ | 115–170 mm4.5–6.7″ |
| Effective top tube | 505–590 mm19.9–23.2″ | 510–576 mm20.1–22.7″ |
| Seat tube length | 420–580 mm16.5–22.8″ | 440–540 mm17.3–21.3″ |
| Chainstay | 406–412 mm16–16.2″ | 410 mm16.1″ |
| Wheelbase | 971–1,002 mm38.2–39.4″ | 960–1,004 mm37.8–39.5″ |
| BB drop | — | 68–72 mm2.7–2.8″ |
| Front centre | 575–602 mm22.6–23.7″ | — |
| Standover | 722–857 mm28.4–33.7″ | 733–811 mm28.9–31.9″ |
| Wheel size | — | 700c |
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).