Head to head
Campagnolo Bora Ultra WTO 45vsFulcrum Speed 42
Both sections drawn to one scale, from each maker's published geometry. The differences you can see in the drawing are the differences that exist.
vs
Fig. — rim sections, one scale
Campagnolo Bora Ultra WTO 45Fulcrum Speed 42
- Depth
- 3 mm apart
- 45 vs 42 mm
- External
- 0.3999999999999986 mm apart
- 26.1 vs 26.5 mm
- Internal
- Identical
- 19 vs 19 mm
- Claimed weight
- Level
- 1,385 vs 1,385 g
- UK RRP
- £600 apart
- £2,400 vs £1,800
Rim depth
45 mm
42 mm
3 mm apart. Deeper is faster on the flat; shallower is calmer in crosswind and lighter uphill. Neither is simply better.
Internal width
19 mm
19 mm
Identical — both suit the same tyre widths.
External width
26.1 mm
26.5 mm
Governs how the rim and tyre meet the air, and frame clearance.
Campagnolo
Bora Ultra WTO 45
RRP £2,400
UCI mass-start road
Eligible — Eligible on the rules we assess
Fulcrum
Speed 42
RRP £1,800
UCI mass-start road
Eligible — Eligible on the rules we assess