Gravel rocket which lets you discover unknown dimensions of cycling, new tracks, and the world in a way you have never seen before from your bike or on the road. Lightweight and stiff Mid Modulus carbon frame perfectly reacts on every single pedal stroke and literally shoots you forward. At the same time, it offers above-standard comfort. Light wheels are equipped with 45 mm tubeless-ready WTB tires able to ride through unimaginable terrain. Gravelride CRB 900 got a pure set of GRX 1x11 with 40x11-42 gear, faultless gear shifting, and mountain set endurance. Gravelride includes mounting points for three bidons, mudguards, front and rear carrier – you can take off for a bikepacking adventure, or commute to work in all kinds of weather. Even better comfort&control is provided by a carbon handlebar together with a dropper post with 70 mm travel controlled by your left brake lever. Clever details, such as thru-axles with hidden QR lever, are the icing on the cake.
  • UPDATED 1st GEN carbon frame with Gravel Advanced Geometry, Fender&Carrier Ready, Including chain guide
  • SHIMANO GRX-812 1x11 40 x 11-42
  • SHIMANO Pro Discover Dropper post with 70 mm travel
  • Anti-Slip and Reflective grip
  • Thru axles with hidden QR lever
  • Tires WTB Riddler TCS Light/Fast Rolling Tan Wall, 700x45C

  • COLOUR Gloss Light Olive/Black/Silver
  • FRAME Carbon Mid Modulus PD-FB-15, Gravel Advanced Geometry, BB BSA 68mm, Disc Brake Flat Mount, Thru Axle 142x12, Road+ Standard, Fender&Carrier Ready, Replaceable RD Hanger, Inner Cable Routing and Seat Clamp
  • HEAD SET FSA Orbit IS 138 IS-2-138 ACB, 1-1/8"
  • FORK Gravel Specific Carbon, Fender&Carrier Ready, 1-1/8-1.5", Flat Mount, 100x12 Thru Axle
  • SIZES 52cm(S), 54cm(M), 56cm(L), 58cm(XL)

  • GEARS 1x11
  • SHIFTER SHIMANO GRX ST-RX810, 11-speed
  • CRANKSET SHIMANO GRX FC-RX810 Hollowtech II, 40T
  • CASSETE SHIMANO SLX CS-M7000-11, 11-42T
  • PEDALS Pedals not included

  • HANDLEBAR Easton EC70 AX, 16° flared, 420/460mm, 31.8mm
  • STEM Easton EA70 Alloy, 31.8xE80/100mm, 6°
  • GRIPS Velo VL-T5079HD2R, anti-slip, reflective
  • BRAKES SHIMANO GRX BR-RX810, 160/160 rotor, hydraulic disc brake
  • SEAT POST SHIMANO PRO Discover, dropper post 70mm travel, 27.2x350mm

  • RIMS WTB ST i23 Light, 32H
  • TIRES WTB Riddler TCS Light/Fast Rolling Tan Wall, 700x45C
  • SPOKES Sapim Leader, Stainless Black

  • Total WEIGHT* 9.5 Kg (M size)

Weight is set for M sized frame unless stated otherwise. We focus on maximum reliability, so cutting some grams down is not our priority! The weight is measured as the each bike specification shows.

Frame Size 52cm (S) 54cm (M) 56cm (L) 58cm (XL)
WHEELS SIZE 52cm (S): 700 54cm (M): 700 56cm (L): 700 58cm (XL): 700
SEAT TUBE LENGTH (mm) 52cm (S): 482 54cm (M): 502 56cm (L): 522 58cm (XL): 542
seat tube angle degree 52cm (S): 74 54cm (M): 73.5 56cm (L): 73 58cm (XL): 73
EFFECTIVE TOP TUBE LENGTH (mm) 52cm (S): 526 54cm (M): 546 56cm (L): 570 58cm (XL): 591
REAch (mm) 52cm (S): 365 54cm (M): 373 56cm (L): 386 58cm (XL): 401
STACK HEIGHT (MM) 52cm (S): 561 54cm (M): 584 56cm (L): 603 58cm (XL): 621
HEAD TUBE LENGTH (mm) 52cm (S): 135 54cm (M): 155 56cm (L): 175 58cm (XL): 195
head tube angle degree 52cm (S): 71 54cm (M): 71 56cm (L): 71 58cm (XL): 71
CHAINSTAY LENGTH (mm) 52cm (S): 440 54cm (M): 440 56cm (L): 440 58cm (XL): 440
bb drop (mm) 52cm (S): 68 54cm (M): 68 56cm (L): 68 58cm (XL): 68
WHEELBASE (mm) 52cm (S): 1032 54cm (M): 1038 56cm (L): 1058 58cm (XL): 1079
Handlebar Width (mm) 52cm (S): 488 (top 420) 54cm (M): 528 (top 460) 56cm (L): 528 (top 460) 58cm (XL): 528 (top 460)
Stem Length (mm) 52cm (S): 80 54cm (M): 80 56cm (L): 80 58cm (XL): 100
Crank Length (mm) 52cm (S): 172.5 54cm (M): 175 56cm (L): 175 58cm (XL): 175
seat post lenght/travel (mm) 52cm (S): L350 - T70 / 350 54cm (M): L350 - T70 / 350 56cm (L): L350 - T70 / 350 58cm (XL): L350 - T70 / 350

Frame size

Your height

We reccomend *

* The recommendation covers most common body types. Always try the bike yourself at the nearest shop!

2021 NOTE: Due to the pandemic and difficulties in the delivery chain arising worldwide & extreme demand for our bikes at the same time, we reserve the right to replace some parts with those at the same level of performance (e.g. different brand, the same level of parts) to keep the overall quality of our bicycles. We’re sorry about that. At the end of the day, riding a bike is the best way of #staypositive ever, no matter what brand your handlebar or any other part is!

Manufacturers reserve the right to vary specifiations, including colors, with or without notice at such times in such manner as deemed appropriate. Major as well as minor changes may be involved. Every effort, however, is made to ensure the accuracy of the particulars contained in this presentation. Consult your Dealer for details regarding the specifications of any featured product. This presentation shall not constitute - under any circumstances whatsoever - an offer by the Company to any individual. All sales are made by the Distributor or Dealer subject to and with the benefit of the standard Conditions of Sale and Warranty provided by the Distributor or Dealer, copies of which may be obtained upon request. While efforts are made to ensure specification accuracy cannot always immediately reflect either change in specification or in some isolated cases the provision of a particular feature. Customers are always advised to discuss specific details with the supplying Dealer, especially if a selection is dependent upon one of the features advertised.* The range of the e-bike depends on many factors such as the rider's weight, the track profile, the level of assistance, gear settings, the wind, etc., so the information is indicative and may vary.

Nearest shops

Fahrrad Handels Gesellschaft Radschlag mbH

2 km away

Hallgartenstraße 56

60389 Frankfurt am Main

Tel.: +49 69 452064

Fax.: 069 453099

Fahrrad Müller

8 km away

Frankfurter Str. 67

61118 Bad Vilbel

Tel.: +49 6101 85826

Fax.: +49 6101 84064

Radhaus Walldorf

15 km away

Kelsterbacher Straße 69

64546 Mörfelden-Walldorf

Tel.: +49 6105 2768462

Fax.: +49 6105 2768464

H. Göbel Fahrräder und Zubehör

19 km away

Jügesheimer Weg 23

63500 Seligenstadt

Tel.: +49 6182 961797

We strongly recommend buying our products from authorized dealers only.

Professionals who can advise you the best bike fits your riding style and subsequent service.

Consider these

Rock Machine Research&Development

Passion. Mission.

If you want to burn, be on fire! From the first pencil sketch, through prototype testing and debugging to the finished product tested in the most rigorous labs by the engineers and on the trails by our ambassadors and us.

See you on the trail!

Instagram your Rock Machine moments and get featured!