This 14-year-old's budget weight-weenie bike weighs 5.7kg, has AliExpress parts and features ‘uphill brakes’

This 14-year-old's budget weight-weenie bike weighs 5.7kg, has AliExpress parts and features ‘uphill brakes’

Finn built his bike with his dad, although there might be some debate over who put in the most work

Jack Luke / OurMedia


Finn Miller may only be 14 years old, but he had one of the best bikes that we saw at this year’s National Hill Climb Championships – a weight-weenie special that would make any seasoned hill climber proud. 

A rider for Matlock CC, the host club for this year's nationals, Miller went into the event having claimed several second-place finishes in the junior category at local events through the hill-climb season.

The nationals took place on Bank Road in Matlock, Derbyshire – an 834m course, with more than 100m of elevation gain and an average gradient of 14 per cent. Miller claimed 32nd place in the junior category with a time of 3 minutes 39.8 seconds.

Miller’s hill climb championships were a family affair, with his sister and dad also competing in the nationals. 

Chopped off handlebar on Finn Miller's 2025 National Hill Climb Championships bike.
Miller's bike has a cut-down handlebar. Jack Luke / OurMedia

He enlisted the help of his dad to modify his Viner Maxima RS 4.0 hill-climb bike, which the father and son pair sanded down to remove the paint.

Miller said the frame originally weighed 950g. “I got it down to about 790g after taking the paint off,” he said.

And how long did it take? “Ages.”

Miller’s dad might take issue with the 14-year-old saying 'he' got the weight down. “My dad complained that I didn’t do most of it,” Miller said, “but I was at school, so I couldn’t really.” 

AliExpress saddle on Finn Miller's 2025 National Hill Climb Championships bike.
The saddle cost £10 and weighs 91g. Jack Luke / OurMedia

The final build weighs just 5.7kg. It has a SRAM Red 1x drivetrain with a 36-tooth front chainring, a chopped-down handlebar and a host of AliExpress parts, including the saddle, which cost £10 but weighs a svelte 91g. 

While there are plenty of hyper-expensive bikes at the National Hill Climb Championships, there are also plenty of hacked, cheaper builds. Miller’s Viner is in the spirit of the latter. “We built it for £950,” he said.

There is one compromise with the build – but one that doesn’t really matter for hill climb season: the ‘uphill brakes’.

“They’re useless going down. I’ve had to walk down every single hill climb I’ve done because they’re just useless,” Miller explained.  

Mechanical SRAM 1x drivetrain on Finn Miller's hill climb bike.
Miller's bike has a 1x mechanical SRAM Red drivetrain. Jack Luke / OurMedia
Front brake on Finn Miller's 2025 National Hill Climb Championships bike.
Miller described the brakes as 'uphill brakes'. Jack Luke / OurMedia

Miller’s bike also became a canvas for the hill-climbing scene’s great and good at the weekend's nationals.

The bike is covered in signatures from the likes of Andrew Feather, as well as the winner of the 2024 and 2025 men’s championships, Harry MacFarlane. 

There are also some NSFW additions to the frame, inspirational quotes, and the signatures from the presenters of one particularly big cycling YouTube channel. 

Reflecting on his hill climb season, Miller said he was “dead, tired, cold”... but he still wishes there were more races. 

Up the Watts written on Finn Miller's 2025 National Hill Climb Championships bike.
There are some NSFW graphics on Miller's bike – and inspirational quotes. Jack Luke / OurMedia
Top tube on Finn Miller's 2025 National Hill Climb Championships bike
The hill climbers' mantra: "Pain is an illusion". Jack Luke / Our Media
Fork and head tube on Finn Miller's 2025 National Hill Climb Championships bike
Miller finished 31st in the junior category. Jack Luke / Our Media
Chainstay on Finn Miller's 2025 National Hill Climb Championships bike
"1,000 watts all the way!" Jack Luke / Our Media
Chainstay on Finn Miller's 2025 National Hill Climb Championships bike
Miller's dad helped him sand the paint off the frame. Jack Luke / Our Media
Seatstays on Finn Miller's 2025 National Hill Climb Championships bike
A Viner Maxima RS 4.0 frame is at the heart of the build. Jack Luke / Our Media
Vision hub on Finn Miller's 2025 National Hill Climb Championships bike
Vision hubs keep the wheels turning. Jack Luke / Our Media

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