Genesis Croix De Fer 20 Gravel Bike - 2025

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4001930
  • Mjolnir Chromoly Steel Frame
  • Shimano GRX 2x10-Speed Drivetrain
  • Multiple rack, mudguard & cage mounts
Stock Status:
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Built with care: Our mechanics fully assemble your bike before it's carefully packaged and shipped to you.

At Tweeks Cycles, we ensure your bike arrives fully assembled and, most importantly, well packaged so it arrives with you as it left us.

Upon delivery, simply unpack it, attach any included pedals (believe it or not, some bikes don’t come with pedals!), adjust the handlebars, and you're ready to ride!

It’s all super simple!

BUT! Please take extra care when fitting any pedals that are provided with your bike. Pedals are side specific and MUST be fitted to the correct side of the bike. They are usually clearly labelled Left and Right. Failure to do so will permanently damage the bike, void the bikes warranty and lead to many tantrums, for children or grown children alike!

Comprehensive 14-Point Inspection

Each bike undergoes a meticulous 14-point inspection to guarantee optimal condition and performance:

  • Ensure Cycle is free of any mechanical damage, paint chips or missing parts
  • Grease seat tube, secure seat clamp, make sure the saddle is level and ensure all fixings are secure
  • Ensure handlebar, stem and brake/gear levers are secured
  • Assess headset for play or tightness
  • Ensure handlebar tape or grips are fitted securely
  • Ensure wheel nuts, quick-release levers or through axles are tightened (please note: some adult mountain bikes come with the front wheel removed for transport), true the wheels for optimal alignment and check wheel bearings for proper adjustment
  • Inflate tyres to the correct pressure
  • Ensure front and rear brakes operate correctly. Bleed hydraulic brakes if required
  • Ensure pedal threads are greased
  • Test all gears to ensure smooth operation
  • Check suspension system for correct operation and ensure bolts are tight (if required)
  • Ensure smooth bottom bracket rotation with no free play and secure crank bolts
  • Check cable/house routing and that cable ends are fitted
  • Install reflectors and bell

This thorough process ensures your bike is in peak condition upon arrival. We do not fit mudguards or other accessories prior to shipping as these are likely to be damaged in transit.

Note on Electric Bikes

Due to shipping restrictions, in some circumstances you may receive your new electric bike and its battery separately. This is due to carriage restrictions on some removable batteries.

Note on Balance Bikes

Balance bikes are shipped unassembled, allowing you to enjoy the building experience and retain the original packaging-perfect for gifting.

Details

The Genesis Croix De Fer 20 Gravel Bike features a rugged Mjolnir Chromoly frame, Shimano GRX drivetrain, and TRP Spyre brakes, making it ready for any ride. Its 45mm Maxxis Rambler tubeless-ready tyres and multiple mounting points provide the versatility you need for commutes, trails, or longer adventures.

Key Features and Benefits:

  • Mjolnir Chromoly Frame: Built from durable Chromoly steel, this frame provides a smooth, comfortable ride while withstanding tough terrain and years of use.
  • Amplitude G100 Chromoly Fork: The Chromoly fork boosts control and stability, improving handling on gravel roads, trails, and city streets.
  • Shimano GRX 2x10-Speed Drivetrain: The Shimano GRX RX600/RX400 drivetrain, paired with Tiagra 4700 levers, offers precise gear shifts and wide-range gearing, giving you adaptability for gravel, touring, and commuting.
  • TRP Spyre Mechanical Disc Brakes: Dual-piston design with 160mm rotors offers consistent braking power in all weather and easy maintenance, enhancing safety.
  • Maxxis Rambler 700x45mm Tubeless-Ready tyres: These robust tyres give you grip and comfort on rough or smooth surfaces. The tubeless setup reduces puncture risk, ensuring a worry-free ride.
  • Amplitude G100 Wheelset: Strong and lightweight, these wheels handle diverse conditions and ensure durability over various terrains.
  • Mudguard and Rack Mounts: Pre-installed mounts for mudguards and racks expand utility for commuting, cargo transport, or multi-day adventures.
  • Dynamo Cable Routing and Cage Mount Options: Integrated cable routing for dynamo lights and multiple mounts for water bottles or gear enhance convenience and make it a reliable touring partner.

The Genesis Croix De Fer 20 is built for riders looking for a capable, adaptable bike. With its durable steel frame, reliable disc brakes, and comprehensive Shimano GRX gearing, it’s prepared to take on daily commutes, weekend rides and extended trips. This versatile design meets a wide range of needs, delivering quality and performance across different environments.

Take the leap with a bike that’s ready for any road, any adventure, and any challenge. The Genesis Croix De Fer 20 is ready for you.

Size Guide:

  • X-Small: 156-164cm
  • Small: 164-172cm
  • Medium: 172-180cm
  • Large: 178-186cm
  • X-Large: 186-194cm
Specification

FrameGenesis Mjolnir CrMo, 135mm OLD, QR
ForkGenesis CrMo, 1-1/8" Steerer, 100mm OLD, QR
HeadsetEC34/EC34
BrakesTRP Spyre, 160mm/160mm, Mechanical
ShiftersShimano Tiagra ST-4700 2x10sp
Front DerailleurShimano GRX FD-RX400 2sp
Rear DerailleurShimano GRX RD-RX400 10sp
CrankShimano GRX FC-RX600, 46-30T, 170mm (XS-SM-MD), 175mm (LG-XL)
Bottom BracketShimano BSA 68mm
ChainKMC X10
CassetteShimano HG500 11-34T
RimsAmplitude G-100, 622x26, 32h
HubsKT K68, 32H, 6-Bolt
SpokesDouble Butted 14G Stainless
TyresMaxxis Rambler 700x45c TR
HandlebarAmplitude G-100, 420mm (XS), 440mm (SM-MD), 460mm (LG-XL)
BarTapeBlack Gel Tape
StemAmplitude G-100, 70mm (XS), 80mm (SM), 100mm (MD, LG, XL)
Seat CollarAlloy, 29.8mm
SeatpostAmplitude G-100, 27.2mm x 350mm
SaddleMadison Flux Switch 142mm x 280mm
PedalsNW-91K Pedal

Size L, M, S, XL, XS

BrandGenesis
MPN(s)GN10810LG, GN10810MD, GN10810SM, GN10810XL, GN10810XS

Customer Reviews
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Finance

Our Payment Options

Maestro Mastercard Visa PayPal V12 Retail Finance

Online we currently accept payment from the methods listed above including a wide range of finance options. In store we also accept payment in the form of cash and gift vouchers.

Finance Options

In order to get the kit you want, when you need it, without ruining the family finances we offer a highly flexible range of finance options to help you get the best products on your bike now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.

D.T.(Automotives) Limited T/A Tweeks Cycles is authorised and regulated by the Financial Conduct Authority and is the broker and not the lender. Our FCA registration number is 689896. D.T.(Automotives) Limited offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance and Klarna. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority.

Delivery & Returns

UK Mainland Delivery Prices

Delivery Type Cost Estimated Delivery Time
Standard Delivery for orders under £49.99 from £1.33 2-3 working days from day of despatch(Excludes weekends and Bank Holidays)
Standard Delivery for orders over £49.99 Free
Bike Delivery Free 3-5 working days from day of despatch *(Excludes weekends and Bank Holidays)
Express Delivery from £1.68 1-2 working days from day of despatch(Excludes weekends and Bank Holidays)
Special Delivery from £12.54 For any next working day delivery order before 4.30pm Monday to Thursday.
For any weekend delivery order before 4.30pm Friday

* Bike Delivery Info

A bike has to go though a Pre Delivery Inspection (PDI Check) prior to despatch, ensuring the bike is thoroughly checked and set up prior to you receiving. This also means an express delivery service is unavailable. We strive to despatch bikes within 3-5 working days. Please note this may change over school holidays and the festive season (November/December). For more information on the process please visit our pre-build page.

For international shipping please visit our delivery page.

For information about returning an item please visit our returns page.