Rehobos Sandman 6: A Carbon Gravel Bike Built for Versatility

Introduction

The Rehobos Sandman 6 is a carbon gravel bike from a German direct-to-consumer brand, and it sits in the middle of the company’s range at £2,099 with an 11-speed Shimano GRX build. Prices start at £1,499 for a Shimano Sora build and reach £2,999 with Shimano 105 Di2.

Every build uses the same full carbon frame and fork, made with Toray T800 fibers, so the platform stays consistent whether you buy at the entry point or at the top of the range. Rehobos positions its bikes around a balance of performance, everyday durability, and value, with the aim of getting more riders onto carbon.

Who the Sandman 6 Is For

Rehobos designed the Sandman as a do-it-all gravel bike rather than a single-purpose race machine. That makes it relevant for light off-road riding, bikepacking, commuting, or any combination of the three.

A primary goal for the brand is getting new riders, or riders working to a smaller budget, onto a proper high-performance carbon bike with as few compromises as possible. Riders who want one bike to cover a weekly commute, weekend gravel loops, and the occasional loaded trip are the clearest fit.

Frame, Geometry, and Design

The frame covers the details expected of a modern carbon gravel bike. There is sculpting around the seat cluster and a decent amount of exposed seat post, which should help with rear end compliance. A hidden seat clamp and fully internal cable routing keep the silhouette clean, and the one-piece carbon cockpit has a subtle flare for off-road handling confidence without going to an extreme shape. A computer mount, sold separately, bolts directly to the underside of the bar.

Clearance is generous at 50 mm, and the frame carries 26 mounting points for bottles, luggage, racks, mudguards, and similar accessories.

Geometry is standard gravel territory. A medium frame offers 373 mm of reach and 579 mm of stack, short enough and tall enough to feel approachable for newer riders and on steeper terrain. The Sandman 6 is finished in green, with blue, gold, and ivory also available.

Drivetrain and Braking

The Sandman 6 runs Shimano GRX RX600, a groupset designed specifically for gravel. The drivetrain pairs an 11-speed cassette with a double crankset for 22 gears across a wide range. A 32-tooth inner ring and a 34-tooth cassette sprocket handle serious gradients, while a 46-tooth chainring and an 11-tooth cog are big enough for any off-road descent and still reasonable on tarmac. The 11-speed setup also keeps gear spacing tighter than 10-speed while holding the price down.

A distinguishing GRX feature is the mountain bike style clutch on the rear derailleur, which stops the chain flapping around or dropping when the surface gets rough. Rehobos also specs a universal derailleur hanger, the standard created by SRAM and now used on a vast number of bikes. Because the hanger is designed to break away in a crash and protect the frame, a universal design means spare parts are never hard to find, unlike the proprietary hangers many bikes once used. Shimano’s brakes round out the build with a solid lever feel and good modulation for technical riding.

Claimed weight for the build is around 9.8 kg.

Wheels and Tires

The Sandman uses Rehobos’ own alloy wheels, which accept tires from 25 mm to 50 mm wide. Rehobos highlights the process behind them: Truedy, a wheel-building system developed by Bird that works as a computerized truing stand, calculating the adjustments needed as it goes and guiding the wheel builder. The stated aim is to produce accurate wheels more quickly and affordably.

Standard rubber is a 40 mm all-rounder gravel tire from CST, a sensible choice for rides that mix surfaces and one that won’t feel too draggy over longer stretches of tarmac. Since clearance runs to 50 mm, fitting mountain-bike-adjacent rubber later is straightforward.

Things to Consider Before Buying

Fully internal cable routing looks tidy, but it brings a trade-off in ease of maintenance and fit adjustments. That is worth weighing if you like to swap stems or service cables yourself.

Rehobos sells direct to consumers and has no physical shops. Buyers receive a bike that is 95 percent built, so setup is limited to fitting the front wheel, inserting the seat post, pumping up the tires, and heading out for a ride. The wheels are Rehobos’ own alloy items rather than a third-party brand, and the cockpit computer mount is a separate purchase.

Buying Advice

Because the frame and fork are identical across the range, the decision comes down to drivetrain. The £1,499 Shimano Sora build is the most accessible route onto the carbon platform. The £2,099 Sandman 6 with 11-speed Shimano GRX RX600 sits in the middle and adds the clutch derailleur, tighter gear spacing, and the wide range that suits mixed-surface riding. At £2,999, the Shimano 105 Di2 build moves to electronic shifting.

For most riders splitting time between tarmac, gravel, and commuting, the GRX build is the sensible middle ground. The 50 mm tire clearance and 26 mounting points also mean the same frame can be adapted for bikepacking or bad-weather commuting without changing platforms, which is a meaningful long-term advantage.

Conclusion

The Rehobos Sandman 6 makes a clear case for itself: a shared Toray T800 carbon frame and fork, 50 mm tire clearance, 26 mounting points, a GRX drivetrain with a clutch derailleur, and a universal derailleur hanger that keeps spare parts easy to source. Riders who want one versatile carbon gravel bike at a competitive price, and who are comfortable buying direct, have a lot to like here.