Head to head
Hunt 48 Limitless Aero DiscvsZipp 303 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
Hunt 48 Limitless Aero DiscZipp 303 Firecrest
- Depth
- 8 mm apart
- 48 vs 40 mm
- External
- 5 mm apart
- 35 vs 30 mm
- Internal
- 2.5 mm apart
- 22.5 vs 25 mm
- Claimed weight
- 268 g apart
- 1,618 vs 1,350 g
- UK RRP
- £651 apart
- £1,149 vs £1,800
Rim depth
48 mm
40 mm
8 mm apart. Deeper is faster on the flat; shallower is calmer in crosswind and lighter uphill. Neither is simply better.
Internal width
22.5 mm
25 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
35 mm
30 mm
Governs how the rim and tyre meet the air, and frame clearance.
Hunt
48 Limitless Aero Disc
RRP £1,149
UCI mass-start road
Eligible — Eligible on the rules we assess
Zipp
303 Firecrest
RRP £1,800
UCI mass-start road
Eligible — Eligible on rim height; tyre choice is restricted