How to Restrict Your Gears for British Triathlon | SRAM AXS 7.00m Rollout Setup

Описание: British Triathlon introduced a 7.00 metre rollout limit for Youth draft legal racing from the 2026 season onwards. Most of the guidance is based around Shimano gear ratios such as 36×11, but many modern bikes now use SRAM AXS electronic groupsets, which use a 10 tooth smallest sprocket.

That difference can make it confusing to ensure a bike complies with the regulations.

In this video we show how to restrict your gears correctly for British Triathlon racing when using a SRAM Rival E1 AXS drivetrain, without restricting the rear derailleur and without damaging the electronic system.

The bike was built for Bibi Abernethy, a Youth athlete racing in the British Triathlon Super Series.

Using the method shown in this video we achieved a rollout of 6.90m, safely under the 7.00m limit.

Bike specification

Groupset
SRAM Rival E1 AXS 2×

Chainrings
48 / 35

Cassette
10–36

Wheelset
Vision SC 45 SL i23 Disc

Internal rim width
23 mm

Tyres
Goodyear Eagle F1 R – 30 mm

Tyre pressure during test
75 PSI

Hardest usable gear
35 × 11

Measured rollout
6.87 m


What the video covers

• How the British Triathlon rollout rule works
• How to restrict your gears for Youth draft legal racing
• Why SRAM AXS gearing differs from Shimano setups
• Locking the drivetrain on the small chainring
• Why the rear derailleur cannot access the 10T sprocket
• Measuring rollout correctly with the rider on the bike
• Achieving a compliant 6.87m rollout

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