Head to head
Campagnolo Bora Ultra WTO 45vsZipp 404 Firecrest
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 45Zipp 404 Firecrest
- Depth
- 13 mm apart
- 45 vs 58 mm
- External
- 1.3999999999999986 mm apart
- 26.1 vs 27.5 mm
- Internal
- 4 mm apart
- 19 vs 23 mm
- Claimed weight
- 131 g apart
- 1,385 vs 1,516 g
- UK RRP
- £400 apart
- £2,400 vs £2,000
Rim depth
45 mm
58 mm
13 mm apart. Deeper is faster on the flat; shallower is calmer in crosswind and lighter uphill. Neither is simply better.
Internal width
19 mm
23 mm
The wider rim is built around a wider tyre. Match this to the tyre you actually run, not to the bigger number.
External width
26.1 mm
27.5 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
Zipp
404 Firecrest
RRP £2,000
UCI mass-start road
Eligible — Eligible on rim height; tyre choice is restricted