Grin One goes into series production: The lightweight aluminium newcomer will soon be available to buy

The Grin One is no ordinary zero-eight-fifteen bike. It's not every day that a new bike brand is founded in Germany and then sells its first frames some time later. The man behind this story is called Philipp Brunn and started to turn his dream into reality during the coronavirus pandemic: To build his own enduro bike. We have already reported on what happened next. A private project turned into a new brand and a small company. Brunn is well connected in the mountain bike scene and his progress quickly made the rounds. Anyone who is fed up with the uniformity of the big bike manufacturers should prick up their ears now, because his first product, the Grin One, is going into series production!

Details of the new Grin One

• Range of use: Enduro / All Mountain
• Front suspension travel: 150 / 160 /170 mm
• Rear suspension travel: 150 / 160 /170 mm
• Wheel size: 29"/27.5" (Mullet) - size S-XL | 29" - size L-XL
• Frame material: Aluminium
• Frame weight: 3.35 kg (size M)
• Maximum system weight: 120 kg
• Price: 2450 Euro (frameset without shock absorber)
• Availability: Frame pre-order from 09.12.2024
• Special features: new brand, flip chip, three suspension travel options

>> BIKE has already been able to test a prototype of the Grin One. <<

New brand, first bike: what's behind the Grin One

Unconventional: Grin Bikes chose its name after a bodily reaction - namely the grin. The first bike from the new German brand aims to conjure up the same grin on its customers' faces. The Grin One is designed to be clean, aesthetic and powerful. At 3.35 kilos, the aluminium frame is light compared to its suspension travel class. A steep seat angle promises an efficient climbing position on high-percentage climbs. The bike is approved for small chainrings between 26 and 32 teeth. The seat tube length is deliberately short (430 millimetres in frame size L). In combination with dropper posts with up to 240 millimetres of travel and a low standover height, the rider should have plenty of freedom of movement for technically demanding descents.

The geometry of the new Grin One can be fine-tuned using a flip chip. In the slackest geometry setting, the steering angle measures between 63.2 and 65.1 degrees, depending on the choice of rear wheel size and suspension travel option. For a balanced riding position in all frame sizes, the chainstay length grows with the rider. All sizes can be set up in a mullet setup, and a 29-inch rear wheel is also possible for L and XL. Depending on the shock stroke, the four-bar rear suspension realises 150, 160 or 170 millimetres of travel. The bike is approved for both air and coil spring shocks.

As standard, the Grin One has a removable ISCG05 mount and a Sram UDH derailleur hanger for transmission drivetrains. 200 millimetre brake discs can be used with the rear post mount without an adapter. The threaded BSA bottom bracket should increase ease of maintenance. There is a tool mount under the top tube and a bottle cage mount on the down tube. Compared to the prototype, the series frames come with improved chainstay and down tube protection. The cable routing on the rear triangle has been optimised and the clamping force on the shock is said to have been increased by enlarging the damper screw connection from M6 to M8. The series frames are produced by an established manufacturer in Taiwan.

Prices & availability

Grin offers the One primarily as a frame kit at a price of 2450 euros. Pre-orders will be accepted for direct sales via the website from 9 December 2024. However, Grin is currently also building up a dealer network. These can also be used to build customised all-mountain or enduro bikes based on the frameset. Four sizes from S to XL and three colour options - raw, black and green - are available.