Geometron Bikes

28/02/2025

Our goal is to make bikes that last longer and are easier to live with and the Nicolai/Geometron G1 GPIadds its own advances in durability, long-term reliability, and minimal maintenance.

The integration of a PINION gearbox offers significant advantages over traditional derailleur-based systems. With an overall gear range of 600% and consistent 17.7% gear steps, the PINION C1.12i outperforms conventional 12-speed derailleur systems, which typically offer only 500–520% range. All moving components are sealed inside a robust, protective housing, shielding them from dirt, debris, and impact damage. The PINION C-line gearbox service interval is a whopping 10000Km. Say goodbye to bent derailleur hangers and constant adjustments, instead, enjoy precise, instant gear shifts, even under load or while stationary. Alongside these attributes the gearbox brings other performance improvements. A drivetrain unit integrated in the center of the mainframe means an optimised weight balance of the bike. The gearbox enables us to have a real impact on changing the sprung to unsprung mass ratio on a bicycle. The lighter the unsprung mass, the more reactive the suspension system and the easier it is for the rear wheel to follow the terrain. The unsprung mass consists of the components that aren’t supported by the suspension e.g. wheels, derailleur, chain and seat stays. We have been great proponents of increasing the sprung to unsprung weight ratio of our bikes, you only need to strap weights to the frame of your current bike or simply ride an Ebike to experience the effect a change in that ratio has to the ride and suspension feel.

For more information build pricing and to place your order head to GEOMETRONBIKES.CO.UK

23/02/2025

We’re thrilled to see the User Award results – the NICOLAI/Geometron G1 claimed silver 🥈 in the Bike of the Year category! A huge THANK YOU 🫶 to everyone who voted!

The G1 has proven itself as a hardy gravity companion, handling both ascents and descents with ease on the toughest terrain. Its versatility shines through, adapting to all gravity disciplines with simple, cost-effective frame tweaks—making it the only bike you'll need in your stable.

And now... we’ve got something even more exciting coming your way! The G1 chassis is getting a major update, staying true to its rugged, configurable, and performance-driven roots. 🥁

Introducing the G1 GPI with Pinion Smart.Shift and Gates Carbon Drive—launching soon, stay tuned!



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13/02/2025

After extensive testing with both the Medium and Small GeoMetron G1, Gundars dived deep into the geometry to identify the ideal balance, he even brought his own wheelset and tyres down to ensure a consistent ride feel between bikes. The result? Gundars went the extra mile to fine-tune his perfect fit with a tailor made G1 frameset. A custom-sized G1 with a Medium seat tube height inc. integrated seat clamp gusset and head tube length, paired with a 461mm reach—a fusion that meets his exacting demands. Every rider has unique requirements, and Gundars’ geometry was carefully crafted to meet his. His bespoke order has been submitted to , ensuring precision craftsmanship and attention to detail. Including the tailored mainframe fit, his G1 will still retain all of the Mutator adjustment range, allowing for experimentation with rear wheel size, chainstay length, and BB/head angle adjustments.

🔧⚙️Next week his new frame lands at GeoMetron HQ for the final assembly.

27/01/2025

A Geometron G1 isn’t just a bike; it’s a tool forged for the extremes. It thrives where the landscape doesn’t compromise — where nature demands strength and endurance. The European Alps, with their towering peaks and unforgiving terrain, offer a true test of both man and machine.

Here’s carving his way down the brutal La Grave in the French Alps, showing what it means to push boundaries on the G1. A ride that’s as relentless as the mountain itself.

For more information on the versatility and robustness of the Geometron G1, head to our website www.geometronbikes.co.uk

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22/01/2025

We're in the thick of winter here and seeing the winter miles paying off right now may be hard to imagine—especially here in the UK—but rest assured, the effort will translate into summer smiles when the time comes.

During these winter months, we're excited to begin filling our Demo event calendar across the UK, and we'd love to hear where you'd like to see us next. For 2025 we have a fresh demo fleet to get dirty as we begin distributing the fantastic .bikes S16 .eu MGU Ebike, we of course have our 2025 G1's bikes and as well as all those we have a new addition we're about to reveal shortly.

We’re already gearing up for events at , a visit to down south, a trip to the Scottish Borders and a summer GeoMetron HQ open house with the dates TBC. But we want to hear from you—where would you like us to bring our bikes? Whether you're keen to explore suspension, geometry, or simply discover what makes GeoMetron bikes stand out, we’re here to connect with passionate riders like you. Drop your suggestions below, and let’s ride together!

Don't forget that you can come to us, we conduct our extensive one to one demo rides from our HQ here in the Wye valley all year round. We only need a few days notice to fit you into our schedule and prepare the bikes for you. Simply just message us or drop us an email to book your test ride.

And finally for 2025, jumping onboard a GeoMetron bike just got even more cost-effective for UK-based riders. You can now purchase through the Ride to Work scheme, as we've joined both Cyclescheme and The Green Commute Initiative. If you’ve got any questions or need more information, feel free to drop us a message, and we’ll get back to you as soon as possible.

15/01/2025

The cherry on the top of the G1 chassis is the bespoke damper developed in collaboration with to deliver a hand-made in Italy V4 Storia G1 🤌🏼 The V4 unit has received a number of upgrades.

Following their implementation in the first G1 Storia V3, the V4 now features spherical eyelet bearings in both eyelets, reducing stress on the shock during high load moments, improving eyelet bearing performance and longevity. This results in smoother, more sensitive suspension movement and less maintenance compared to conventional DU & Pin eyelet hardware.

A new addition to the Storia V4 is position-sensitive rebound, with a secondary piston providing a hydraulic top-out stop. This replaces the internal coil negative spring in the V3 Storia.

As with previous models, the Storia V4 allows adjustments to high and low-speed compression, rebound, and now includes adjustment of the hydraulic bottom-out circuit. Plus, true to the Storia range, it’s equipped with the LOK lever for precise tuning.

EXT is now offering an extended 5-year warranty on the Storia V4. This warranty covers the damper for up to five years from the purchase date, giving you peace of mind and long-lasting performance. To activate the warranty, customers simply need to register their damper on EXT’s website within 30 days of purchase. The program ensures that your damper remains in top condition with expert support and service.

Finally, our G1 Storia V4 dampers are available in three sizes: The standard Enduro spec 230x65mm 162/175mm RWT, the XC/trail spec 210x55mm 140/152mm, and the long travel DH spec 250x75mm 185/200mm . So if you want to take your G1 down to 140mm or up to 200mm RWT you can equip it with the G1 Storia V4 🙌🏼.










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07/01/2025

Alexander’s custom powder-coated GeoMetron G1 in size XXL arrived with him just in time for the festive break, and he wasted no time getting it built up. With the stunning mountains of Colorado as his backdrop, he headed straight to his local trails, where the bike settled into the remote singletrack with ease.

There's no way of hiding it, at 200cm tall Alexander's bike is BIG 535mm reach and 480mm Chain stays, he's rolling on 29" wheels front and rear with 170mm travel. After over a decade of riding that now fits him correctly.

We're looking forward to seeing where Alexander and his G1 end up this year with new bike stoke pulling him through the winter miles his riding is sure to reach new heights ⛰️

27/12/2024

As 2024 comes to a close, we at GeoMetron Bikes want to express our heartfelt thanks to all of our riders, partners, and supporters. This year has been an incredible journey, filled with epic rides, unforgettable moments, and the continuous pursuit of innovation in mountain biking. We are proud to have been part of your adventures and are excited about what’s to come in the future.

Together, we've pushed the boundaries of performance and two wheeled fun. Here’s to more epic trails, lasting memories, and exciting new projects in 2025!

Thank you for being part of the GeoMetron family. Keep riding!

Here are some of our favourites that have rolled out of the workshop over the past 12 months ❤️‍🔥

.bikes

28/11/2024

At GeoMetron, we’re all about pulling in the serious bike tinkerers. We draw in many riders who want to dial in their bike's geometry, tweak every little detail, and get it dialed for their exact needs. That’s why we’re stoked to have the G1, which gives you insane flexibility to adapt your setup. Here’s a solid example of a client who proudly wears the badge of top-tier tinkerer.

Check out this G1, custom built to perfection via our tailor made frame process where you can choose specific changes to your bikes tubes and geometry. It's a size Medium base with custom tweaks to the head tube and seat tube length. Plus, it still keeps the full GeoMetron mutator range, so if they want to dial in the geometry even further they have adjustable components at the chain stay and seat stay to make a multitude of incremental changes.

Yep that right, custom frames are back on the menu with the 2025 G1 frame set. Upcharge of £520.83 plus VAT. For all Tailor Made Frame enquiries email us directly on [email protected] and we'll make it happen 🪄

25/11/2024

Built to take on whatevers thrown at it 🥊This Irish roots inspired G1 build 🇮🇪, it looks fast stood still ❤️‍🔥

This build spec and colour way is a reflection of Mel's riding style too. He goes hard with style!

He's configured his G1 medium frame with 200mm travel front and rear fitting the dual crowns up front and a 250mm damper at the rear. It's got a mullet rear wheel and long chain stays. Check out his content to see it rip.

05/11/2024

Geometron Owners Ride 📢 17th November:

Meet at 10am in Forest of Dean Cycle Centre car park.

We plan to head off for a mystery tour and aim to go back to the cafe for about 2pm. Be prepared for 20-25 miles and 3000ish ft climbing with a cake stop mid ride. We'll start with some of the trail centre trails and then head off into the wild FOD back country for some natural off-piste runs.

*Dust not guaranteed as teased on the poster.

This is a social ride so the trail choice and pace will be tuned as we go to keep the stoke high and the group together, all of our lovely crew look out for one another so nobody will be left behind. Emphasis is on having fun and spending time with other like-minded riders, please ride within your limits, the trail centre trails are accessible to all and should you make the choice to head down the off piste trails we can only advise that you ride what you're comfortable with and make sure to ask your fellow riders to give fair warning before any tricky features. There are options to bail out at any point in the ride with easy access back to the trail centre carpark. Bring everything you'd usually need for a ride including a jacket, spares, food, water, whatever you need to be self-sufficient.

Non-owners welcome too: If your riding buddies haven't listened to your indoctrination then feel free to invite them along to hear someone else's reasons why they should see the light and jump on a GeoMetron.

See you there! If you have any questions give us a shout via the Owners Group on Facebook.

15/10/2024

Hot out of the work stand @ GeoMetron HQ; here's new custom G-One

Jamie pulled out all the stops on this build to bring together his ultimate "valleys" spec bike. Details below 👇🏼.

After spending 4 years on board an original G1 he knew exactly what he was looking for with this new build. This bike didn't stay this fresh for very long, it was immediately taken out into the south Wales valleys for a typical wet and slippery shakedown. The New bike stoke will carry him through the winter that lays ahead of us here in the UK. A little about Jamie and what he rides, Jamie is a valleys enigma frankly, you'll find him on the top of a steep sided valley riding steep tech or at a corner shop below searching for haribo to fuel a big elevation climbing day.

⚪Frame: Size Small finished in the beautiful Bronze anodisation paired with a natural anodised/Silver Extra love it.
⚪Configuration: 29" wheels F/R, stock mutator set up, 170mm FWT and 175mm RWT.
⚪Suspension: EXT ERA V2.1 & EXT Storia V4 G1 spec with spherical eyelet bearings.
⚪Wheels: Hubs laced by our terrific wheel builder onto Synthesis enduro alloy rims.
⚪Tyres: Argotal 2.4" DH super soft front and Kryptotal 2.4" DH soft rear.
⚪ Brakes: Cura 4 Polishes with the 2 piece lever upgrade and mix-master cockpit tidies. 203mm rotor front and 180mm rear.
⚪ Bars: Fatbar carbon.
⚪ Drivetrain: Evo cranks 170mm paired with a 32t spiderleas oval chainring. Mix and match XX1 rainbow cassette & GX combination mech, chain and shifter.
⚪ Dropper: Revive 213mm and triggy remote.

We couldn't be more stoked about how this build turned out, and we're looking forward to seeing where this rig takes Jamie over the next 4 years and beyond.

13/10/2024

Raw on raw, looks fast stood still! John's build embodies the perfect blend of style and performance, the Raw Aluminium G1 2025 finished with silver anodised extra love parts speaks volumes, highlighting the engineering and sleek design effortlessly. Plus the raw aluminium finish is the most robust and will look like new years down the line after a quick buff with a scotch bright pad!

We're flexible when it comes to built options, John chose his dream spec of new components and then chose to carry over a few other parts from his previous bike. We tuned his G1 spherical V4 Storia specifically for his weight and riding style and up front he opted for the ERA LT 180mm travel fork. For the drivetrain a SRAM eagle mechanical set up paired with a EVO 155mm crankset. The little mounting bracket beneath the shock lever is a bottle cage mount that is compatible with the YT thirstmaster 2000 which allows you to carry 475ml of hydration to wet the whistle.

It's safe to say John has one solid chassis here that will take on anything in the mountains 🌄

To spec your dream bundle browse our website or simply get in touch with us on email or by phone:
[email protected]
01600887550
geometronbikes.co.uk

20/09/2024

18/09/2024

Here's new G1 build, the cheat code to her riding faster and smoother 💃🏼

Amy has been bedding in her new G1 on all sorts of trails in South Wales over the past few weeks, including a day of party laps . It's safe to say she's gelled with the new ride characteristics of the G1.

Her sweet new ride is running Mullet wheelsize and set up with 170mm FWT and 175mm RWT.
Here's some of the components built onto her G1: Shock of choice for fun laps on jumps and flow is the Aria. 471 rims chosen for their weight and narrower internal rim diamer and laced to the bombproof P5 hubs.
Cura 4 brakes.
finishing kit.
revive Dropper post.
GeoMetron Water bottle bracket with the YT thirstmaster 2000 fitted.

We're looking forward to seeing where Amy and her G1 go next 🤘🏼

A balanced geometry, tweaked suspension system and multiple small refinements could most certainly be considered a cheat code when a rider is able to engage with the bike and trail with more confidence and composure. If you have any questions about our sizing, geometry or kinematics feel free to ask.

10/09/2024

We've got some fresh builds coming together in the workshop this week 💚. The recognisable pallet wood walls of our workshop have had the all new production G1 frames displayed in front of them as we begin to assemble and dial in the configuration for our lucky first batch customers.

This G1 frame bundle is heading over to in Ireland 🇮🇪. He's not shy when it comes to throwing the bike around and pulling some mad shapes. We're looking forward to seeing what he gets up to on board this fresh vessel 🔥

13/08/2024

Here are some of the frame details on the new G1. We don't only sweat the details of the geometry numbers we like to sweat over the frame hardware details. The G1 is now easier to live with and more practical to maintain.

- Integrated seat clamp & gusset flows beautifully with the new design language and low profile top tube.

- New chain stay protector made up of two pieces. A hard plastic base mounted on the chainstay and replaceable rubber inserts that glue into place on the plastic base.

- New Rear Aligning drop-out aka RADO. The RADO is an instrumental tool designed into all Nicolai frames which allows fine tuning of the frames alignment in its final stage of assembly ensuring the frame leaves the factory 100% true. The RADO has now been redesigned to accomodate universal derailleur hangers or T-Type drive train systems.

- increased tyre clearance on the chainstay and seat stay.

- Cable routing & cable security is improved on both sides of the chainstay for secure gear cable and brake hose routing. The G1 has completely external brake and gear cable routing which makes mechanicals out in the wild less stressful and easier to fix (Sam is pretty proud of his complete front and rear brake change in 10 minutes).

Here's a little update: We've been rather busy down here in the Wye valley recently. We're eagerly awaiting the arrival of our first batch of production 2025 G1 frames. We're very excited to see them out on the trails with our customers dotted all around the world. We're going to be dispatching frames to the USA, Canada, Australia and of course here on UK soil.

Finally if you're interested in purchasing a new G1, we're going to be receiving our new demo bikes too. If you'd like to try one please get in touch to arrange a one to one demo ride.