The UCI’s plan to test out controversial new rules on gear restrictions at next week’s Tour of Guangxi in China appears to be in jeopardy, after SRAM’s legal challenge against the “fundamentally unfair” policy was upheld by the Belgian Competition Authority, who have ordered cycling’s governing body to suspend the proposed trial with immediate effect.

The UCI, however, has hit back at the ruling, noting its “surprise at the intervention of a competition authority on a subject desired by all stakeholders of cycling” and claiming that rider safety “does not appear to be a shared objective”.

Last month, we reported that SRAM had launched legal proceedings against the UCI over the governing body’s proposed gear restriction regulations, which the component manufacturer argued violates EU competition law and will unfairly impact and penalise the brand’s riders and teams, without increasing safety during races.

As part of a raft of controversial safety regulations announced earlier this year, the UCI planned to trial its new maximum gearing rule at the final WorldTour event of the season, the Tour of Guangxi in China, which starts on 14 October, as part of its attempts to limit top speeds and reduce danger in the peloton.

This new rule, a variation on the old junior gears system, marks the first technical gear limitation in modern professional cycling and will cap the distance covered per pedal revolution to 10.46 meters – effectively limiting riders to a maximum gear ratio of 54×11 on 700c wheels.

> UCI to trial maximum gearing rule — but will it really make racing safer?

Though we’ve seen many riders mix and match larger chainrings from other brands on their bikes in recent years, Shimano, Campagnolo, and FSA now all have maximum gear ratios of 54×11, meaning they will be largely unaffected by the rule.

However, the trial system will significantly impact SRAM-sponsored teams, whose riders use a 10-tooth smallest cog on the rear cassette. Under the new 10.46 metre cap, any combination exceeding 54×11 is now prohibited.

2024 tdf tech trends - Movistar Sram Red AXS drivetrain
2024 tdf tech trends - Movistar Sram Red AXS drivetrain (Image Credit: Farrelly Atkinson)

This means SRAM riders using a 10-tooth cog will be limited to a maximum 49-tooth chainring, ruling out the 50T and 54T setups that are common in the pro peloton, and the 54×10 configuration favoured by many of SRAM’s professional teams.

In its complaint to the Belgian Competition Authority (BCA), SRAM argued that the proposed protocol was adopted by the UCI without consultation, transparency, or any safety justification, disadvantages SRAM-equipped riders in races, and distorts the drivetrain market, violating EU competition law.

> SRAM launches legal action against UCI over “fundamentally unfair” gear restriction trial, accusing governing body of inflicting “reputational harm” and “stifling innovation” – without “any safety justification”

In a statement issued on Thursday evening, the BCA announced that it has “decided to impose interim measures aimed at suspending the technical standard adopted by the International Cycling Union (UCI) limiting the maximum gear ratio allowed in professional road cycling events to a transmission ratio of 54×11.”

“The BCA recognises the legitimacy and importance for a sports regulator such as the UCI to ensure the safety of athletes,” the authority said.

“However, the procedures for determining technical standards enacted for this purpose, as well as the related tests, must meet essential conditions of proportionality, objectivity, transparency and non-discrimination in view of the economic consequences of these standards. They cannot result in an undue restriction of competition between sports equipment suppliers.

“The BCA considers prima facie that the Maximum Gear Ratio Standard and the procedures governing its adoption by the UCI do not meet the required conditions of objectivity and transparency. The standard further generates disproportionate negative effects on a sports equipment supplier, namely SRAM.”

2024 midrange bike vs superbike sram red axs crankset
2024 midrange bike vs superbike sram red axs crankset (Image Credit: Farrelly Atkinson)

The statement continued: “SRAM is one of the two main suppliers of transmission systems for road bikes used by professional riders and the only one that does not currently have a product meeting the requirements of the Maximum Gear Ratio Standard.

“The standard, adopted under disputable conditions, is likely to cause harm to SRAM that is serious and difficult to repair, thereby justifying its suspension. The harm also extends to professional cycling teams equipped with SRAM transmission systems.”

Noting the “urgency of adopting interim measures”, with the Tour of Guangxi set to start on Tuesday, the BCA said it has ordered the UCI “to suspend immediately, and no later than 13 October, the implementation of the Maximum Gear Ratio Standard”.

> UCI “puzzled” by SRAM’s restricted gearing legal fight

Following the BCA’s ruling, the UCI issued its own statement to confirm that it will appeal the ruling, while hitting back at the competition authority and noting its “surprise” at the intervention (and, rather bizarrely, the international character of the complaint), while also criticising SRAM and accusing it of failing to prioritise rider safety.

“As a result of the provisional measures imposed by the BCA, the test planned for the Tour of Guangxi will not take place and the Test Protocol is currently suspended,” the UCI said.

“The UCI expresses its surprise at the intervention of a competition authority on a subject desired by all stakeholders of cycling, the scope of which was limited to analysing the effects that limiting gear ratios may have on riders’ speed and therefore on safety, especially considering that the decision is issued by a Belgian authority responding to a complaint from a US company against a Swiss sports association regarding a test to be carried out on Chinese territory.

“The UCI deeply regrets that riders’ safety does not appear to be a shared objective with those who challenged the implementation of the Maximum Gearing Test Protocol before the said Authority. However, the UCI will continue to act in the interests of the safety of riders, other members of the peloton and spectators.

“The UCI announces that it will appeal the above-mentioned decision. Changes may also be made to the Testing Protocol to allow for the implementation of the tests desired by all stakeholders in professional road cycling.”

> “Cycling is close to its Ayrton Senna moment”: Dan Bigham says “we will have blood on our hands if Pogačar or Van der Poel have a life-changing injury”, branding UCI gear restriction trial a distraction

However, the UCI’s insistence that it is putting the safety of the peloton first was almost immediately ridiculed by EF Education-EasyPost Jonathan Vaughters, an outspoken critic of the governing body’s recent safety regulations, including its ill-fated decision to trial GPS trackers at the women’s Tour of Romandie in August.

“Perhaps things like making sure parked (and still moving) vehicles are not on the race course, blind corners with rock piles in the apex are not on race courses, and motorcycles aren’t part of the peloton take precedence over gear restrictions, sock lengths, and handlebar width?” the American posted on social media.

Of course, Vaughters and SRAM aren’t the only ones to criticise the UCI’s proposed maximum gearing policy.

Tom Pidcock descending during stage 13, 2025 Giro d’Italia
Tom Pidcock descending during stage 13, 2025 Giro d’Italia (Image Credit: Zac Williams/SWpix.com)

In August, Tom Pidcock claimed that limiting gears would only make the sport more dangerous by crowding the road on descents, while Dan Bigham claimed at the Tour de France that “restricting gear ratios simply distracts from making meaningful changes to rider safety”.

“From my analysis, for reducing ratios to have an impact, we need to presume professionals would adhere to unrealistic cadence limits that aren’t supported by the literature,” the British aerodynamics expert, who now works for SRAM-equipped Red Bull-Bora-Hansgrohe, said in July.

“It’ll impact on as little as 0.01 per cent of a race and will arguably reduce speeds by no more than 0.5kph. All of this to change entire groupset design? It really doesn’t seem effective to me.”