Geometron has announced its flagship G1 mountain bike has been redesigned. It’s been around since 2019, when the brand collaborated with Nicolai Bikes to launch it. And the 2025 model has some pretty cool new features – without losing its almost raw look. For those waiting to hear more about the G2 model with a gearbox that we reported on last year, you’ll have to wait a little longer. So what’s the craic with the new G1? Geometron 2025 G1 need to know: More adjustability than previous G1 thanks to proportional chainstays Change the shock and get different rear wheel travel Uses EXT Racing Shock Mutators on chain stay and seat stay allow for changes to head angle, BB height, chainstay length and wheel size Factory setting with 175mm rear travel/180mm front 16.1kg weight for the GX AXS model and no pedals Priced from £7,499 for GX build or £3,600 for frame and shock What’s new on the Geometron G1 2025 model? The Geometron G1 is and remains the brand’s flagship model – and it’s a do-it-all kind of bike, and with the 2025 model, it’s now suitable for more riders. It will come with 5 different front centre lengths, and 6 different rear centre lengths can be achieved with mutators on the chain stays. These are compatible with all five front centres. Geometron says this means the design will now accommodate riders between 5ft 3in to 6ft 8in (160cm to 202cm). The full build (on the GX AXS model) is claimed to weigh 16.1kg – the same as the previous G1. You also get a few wheel size options, including full 29”, 29/27.5” or full 27.5”. Geometron is really covering its bases with the G1. The seat stay mutators also allow for more adjustability with incremental bottom bracket height as well as the head angle. We asked what length seatpost riders can expect to run on the new G1 – and as expected, this depends on the frame size. But, Geometron does intend for riders to be able to run a minimum of 185mm drop – and the seatpost is straight so you can run longer droppers if you want. More frame edits The frame’s rear aligning dropout has also been redesigned to accommodate the SRAM UDH, so that bodes well for those wanting to utilise it. The top tube has also been lowered by 25mm, and the ZS56 headtube now takes headset cups. For the mechanically minded, you may be pleased to know Geometron has gone for external cabling and a threaded 73mm wide bottom bracket so it’s easier to replace at home. The four bar linkage is progressive, with a 31% total increase in progression – this, according to Geometron provides a softer inital part of the stroke and support when you hit the bigger stuff or take a bigger hit. This is because the force required to compress the suspension increases throughout the stroke so doesn’t rely on the spring rate alone. Geometron also highlights an … Continue reading Geometron has updated its flagship G1 with more adustability and the ability to change the rear travel