2024 Basso Diamante Shimano vs 2025 Basso SV Shimano Dura Ace
The 51 is the Basso SV Shimano Dura Ace size closest to your 51 Basso Diamante Shimano. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Basso SV Shimano Dura Ace
Compared with the Basso Diamante Shimano in 51, the Basso SV Shimano Dura Ace in 51 places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket.
- Frame stack
- +1 mm
- About the same height
- Frame reach
- +1 mm
- About the same reach
- Wheelbase
- n/a
- One of the bikes has no number for this
- Head angle
- +0.4°
- Steeper: sharper steering
- Chainstays
- n/a
- One of the bikes has no number for this
The two frames
We can't draw these frames yet. The Basso Diamante Shimano numbers we have for size 51 are missing the wheelbase. The numbers below still compare.
Geometry side by side
| Measurement | Basso Diamante Shimano 51 | Basso SV Shimano Dura Ace 51 | Difference |
|---|---|---|---|
| Reach | 378.6 | 380 | +1 mm |
| Stack | 546.2 | 547 | +1 mm |
| Head tube angle | 71.6 | 72 | +0.4° |
| Seat tube angle | 75 | 74.7 | −0.3° |
| Effective top tube | 525 | 530 | +5 mm |
| Chainstay length | 400 | not listed | |
| Seat tube length | 510 | 485 | −25 mm |
| Head tube length | 126 | 140 | +14 mm |
| Wheelbase | not listed | 982 | |
| Standover | not listed | 772 |
Differences are the Basso SV Shimano Dura Ace minus the Basso Diamante Shimano. Full charts: 2024 Basso Diamante Shimano, 2025 Basso SV Shimano Dura Ace.
Where each sits in its class
Basso Diamante ShimanoBasso SV Shimano Dura Ace
Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Basso Diamante ShimanoShimano Ultegra 8170 Di2 | Basso SV Shimano Dura AceShimano Dura Ace Di2 |
|---|---|---|
| Frame | Basso Diamante | Basso SV |
| Shifter | Shimano Ultegra R8170 | Shimano Dura-Ace R9270 |
| Derailleur | Shimano Ultegra R8150 Di2 | Shimano Dura-Ace R9250 |
| Cassette | Shimano Ultegra R8100 | Shimano Dura-Ace R9200 |
| Chain | Shimano Ultegra R8100 | Shimano Dura-Ace |
| Crankset | Shimano Ultegra R8100 Di2 | Shimano Dura-Ace R9200 |
| Chainring | Shimano Ultegra, Shimano 34 | Shimano 52, Shimano 36 |
| Bottom bracket | Shimano PF86 | Shimano Dura-Ace R9200 |
| Wheelset | Microtech RE38 | DT Swiss ARC 1100 |
| Tire | Vittoria Corsa | Continental Grand Prix 5000 |
| Brake | Shimano Ultegra R8120 Di2 | Shimano Dura-Ace R9270 |
| Rotor | Shimano Ultegra | Shimano Dura Ace Ice Rotor |
| Handlebar | Basso Levita Integrated | Basso Fuga Integrated |
| Stem | Basso Levita Integrated | Basso Fuga Integrated |
| Headset | Basso Levita Integrated | not listed |
| Seatpost | Basso Diamante SV | not listed |
| Saddle | Selle Italia Flite Boost | Selle Italia SLR Superflow |
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