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Genesis Datum 2020 - Gravel Bike

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Cycle to Work

Product Description

It could be a gravel bike to some, in the same way it could be a fast, comfy road bike to others...

Our large-tyred road disc bike that'll comfortably sit mile-after-mile on tarmac, but, should the tarmac come to an end, it won't mean turning back or the premature end of the ride. Not necessarily about out-and-out overall speed, but more fun, adventure, exploration and pneumatically-suspended comfort. The Datum 10 sports the latest Shimano Tiagra groupset with hydraullic RS405 disc brakes and is all about enjoying yourself, across a variety of terrain, both paved and unpaved, be it fast or leisurely.

Occasionally, without notice, manufacturers change product design and/or specifications.

Specification

Frame:24/30T Modulus Carbon Disc Tapered 1-1/2" - 1-1/8" Fully Internal and Di2 Compatible 12mm Thru Axle
Fork:Full Carbon Disc Fork Tapered 1 1/2" - 1 1/8" 12mm Thru Axle
Headset:FSA Orbit C-40-ACB, NO.42
Stem:Genesis Code 7 - 7 Deg XS 90mm/S-M 100mm/L-XL 110mm
Bars:Genesis X-Race Pro/16deg Flare/XS, 400mm/S-M, 420mm/L-XL, 440mm
Front Brake:Sram Rival Hydraulic Disc 160mm
Rear Brake:Sram Rival Hydraulic Disc 160mm
Brake Lever:Sram Rival 1X Hydraulic
Rear Mech:Sram Rival 1x/Long cage
Shifters:Sram Rival 1x11
Speed:11
Rims:Jalco XCD22 28H
Front Hub:Formula RX-812 6 Bolts 12 mm TA 28H
Rear Hub:Formula RX-300 6 Bolts 12 mm TA 28H
Spokes:Stainless steel 14g
Front Tyre:700 x 38c
Rear Tyre:700 x 38c
Saddle:Genesis Road Comfort
Chainset:Sram Rival 1 XSYNC 42T XS 170mm/S-M 172.5mm/L-XL 175mm
Bottom Bracket:SRAM PF-GXP
Chain:KMC x11
Cassette:Sram NX PG1130 11-42T
Pedals:Basic Resin Flat
Weight:9.48kg

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Datum Sizing & Geometry

Genesis Logo

 

Genesis Datum 2020 Sizing

 

Size

Height (cm)

Height (inches)

XS (52cm) 152 - 167 5'0 - 5'6
S (54cm) 162 - 172 5'4 - 5'8
M (56cm) 170 - 182 5'7 - 6'0
L (58cm) 177 - 187 5'10 - 6'2
XL (60cm) 185 - 193 6'1 - 6'4

 

Genesis Datum 2020 Geometry

 

 XSSMLXL
Seat Tube 460mm 490mm 520mm 540mm 570mm
Top Tube 526mm 542mm 561mm 579mm 595mm
Frame Reach 365mm 375mm 385mm 395mm 405mm
Frame Stack 544mm 563mm 585mm 602mm 621mm
Head Tube 115mm 135mm 155mm 175mm 195mm
Head Angle 72° 72° 72° 72° 72°
Seat Angle 73.5° 73.5° 73.25° 73° 73°
Chainstay 420mm 420mm 420mm 420mm 420mm
BB Drop 72mm 72mm 72mm 72mm 72mm
Wheelbase 985mm 1001mm 1017mm 1033mm 1050mm
Fork Offset 50mm 50mm 50mm 50mm 50mm
Fork Trail 59mm 59mm 59mm 59mm 59mm
Standover 752mm 777mm 801mm 816mm 839mm
Stem 90mm 100mm 100mm 110mm 110mm
Handlebar 400mm 420mm 420mm 440mm 440mm
Crankarm 170mm 172.5mm 172.5mm 175mm 175mm


What size frame do I need if I am between sizes? - 
read here 

Please note, all size information is provided as a guide - if you're unsure or need any further assistance you can call us on 01792 799508 ... we're happy to help!

Gravel Bike Guide

Gravel Bike Guide

What is a Gravel bike?

Gravel bikes, sometimes called adventure bikes, sit somewhere on a sliding scale from what is essentially a drop-bar mountain bike, to something that looks like a traditional road or cyclocross bike.

Comfort based geometry – Most gravel and adventure bikes prioritise rider comfort over outright speed.

Long wheelbase - Continuing the frame design thread, gravel and adventure bikes tend to have a long wheelbase. Increasing this distance helps spread rider weight, increasing stability.

Low bottom bracket – A low bottom bracket (BB) another common gravel bike feature designed to increase the stability of a gravel bike, helping the bike feel more planted.

Generous tyre clearance – Large tyre clearance is yet another concession gravel bike designers pay to ride comfort and stability. Most models come shod with 32mm tyres but with room for much, much wider rubber.

Disc brakes – Drawn by disc brakes' increased stopping power, easier modulation and reduced maintenance it’s no surprise to see bike brands use them on gravel bikes.

As with most bike types, gravel models tend to be unisex. By switching out contact points, or simply adjusting them, it's fairly easy to cater for riders of different shapes. That said, some brands do offer specific women's gravel bikes.


Gravel bikes vs mountain bikes or road bikes: why choose a gravel bike?

Want to throw the in the odd bridleway on your favourite road loop? Don’t fancy going mountain biking, but like the idea of escaping road traffic? Dream of hopping on train for a weekend’s bikepacking? Love road and mountain, but only room for one bike at home? Hanker after a bike that can get you to work quickly Monday to Friday, before enjoying some off-road action at the weekend? Gravel bikes fit each of these scenarios and more!

Gravel bikes are perfectly suited to touring and bikepacking, most have mounts for full-length mudguards, racks and multiple bottle cages. They are incredibly versatile bikes made from either steel, aluminium, titanium or carbon, fitted with slick narrow tyres they will not hold you back on the road, and with knobbly tyres they will not fail to make you grin on the trails, often compared to riding rigid MTB’s back in the day the ride feel is exhilarating and fun, though high end Gravel bikes are thoroughly modern with 1x drive trains, carbon fibre and hydraulic disc brakes, Gravel bikes are now a class of their own.

 

Are there different types of Gravel bikes?

Catering for different types of cycling, Gravel bikes have diversified into two types;

 
road race bikes

Aggressive Gravel bikes

Some Gravel bikes have a lower and more aggressive riding position, similar to a cyclocross bike but with even wider tyres and luggage/mudguard compatibility, these bikes make the perfect “one bike” as with a set of slick/narrow tyres they are perfect for a sportive and casual road events.

aero race bikes

Relaxed Gravel bikes

With a more comfortable geometry giving a more upright position this style of gravel bike is better suited to touring and bikepacking. The taller riding position makes it easier to handle off-road. What they lack in flat out speed they make up for in comfort on the long-distance days.


What type of Gravel bike should I buy?

If you are coming from an MTB background a more relaxed and comfortable Gravel bike might suit you best, as you might aspire to ride rough terrain and see how far away from the smooth road you can get. A serious road rider might prefer a more aggressive Gravel bike that has a familiar geometry to a standard road bike. As ever it depends on the type of riding you intend to do.

 
fitness cycling on a road bike

Fitness training, commuting, All-road

Aggressive gravel bikes are very versatile, they make the perfect fast commuters with their capability to take racks and full-length mudguards, some road racers will find they make the perfect winter training bikes, while others will find them the perfect one bike for commuting, training and once fitted with slick tyres will perform in any tarmac event admirably.

long distance cycling on a road bike

Long distance, Off-road, adventure

Relaxed gravel adventure bikes were made for this exact purpose, the comfortable geometry lending themselves perfectly to big multi-day trips carrying luggage. Wide tyres with large volume add comfort and speed off the tarmac, we are constantly surprised by what these bikes can handle, hydraulic brakes give powerful stopping power even on the hoods, wide range cassettes can tame the steepest gradients.

 

What should I look for when buying a Gravel bike?

Frame and fork

Suspension – A gravel bike with suspension? Are you sure? Yes! Suspension is one of several attributes used to distinguish certain gravel bikes from one another. Most designs involve the use of shock absorbing materials or elastomers in the frame to soak up the bumps, with more extreme models running a front suspension fork, albeit with less travel than a traditional mountain bike.

Dropper post – Dropper post on a gravel bike? Again – are you sure? Yes, yes we are! As off-road descents get steeper and more technical, the more a rider needs to shift their weight over the rear wheel and lower to the ground. A dropper post scoots the saddle out of the way enabling the rider to tackle the descent with confidence. Whilst they’re not a common feature of gravel bikes today, we can certainly see them becoming more popular in future!

Frame mounts – Gravel and adventure bikes are the perfect partner for bikepacking trips. If you’re buying something to go on this kind of trip it’s a good idea to take stock of your chosen model’s frame mounts. Three bottle cage mounts are perhaps the bare minimum for water carrying requirements. And if you’re going to be using an extra-large frame bag which covers the traditional bottle cages, look for a bike whose forks include mounts too!

 


Gears

Chainset – If running 2x or 3x gravel bikes will often have compact or smaller chainrings as top speeds will not be that of standard road bikes, but steep climbs sometimes laden with luggage will require easier gearing. Mid to high-end gravel bikes borrow from MTB technology and use reliable, light and efficient 1x set ups. With no front derailleur and a large wide range cassette, a climb taming ratio is available without sacrificing too much top end speed, but the ease of use, reliability and weight saving is invaluable.

Cassettes – Bikes with a 2 or 3x chainset will often still have a larger cassette than a road bike to still give a wide gear range. 1x gravel bikes will usually have at least a 40 tooth cassette though now 42 and even more teeth are common on high-end gravel bikes.

 

Wheels & Tyres

Wheel sizes – Gravel bikes roll on one of two wheel sizes. Most use standard 700c road wheels, with some using the 650b (27.5”) standard. Teaming a 650b wheel with 47mm tyre is the equivalent of running a 700c wheel with 30mm tyre but with the added benefit of an increase in contact with the ground. Some gravel bikes are compatible with both wheel standards, enabling you to pop a pair of 700c’s in for a swashbuckling road ride, before substituting in the 650b’s for a rough and tumble hack.

Thru axles – The majority of gravel bikes uses thru axles. Stronger and less prone to flex over rough terrain than quick release skewers, they’re also less likely to accidentally come loose whilst riding. A rough standard has been set, with most models using 12x142 rear and 15x100 front.

Tubeless – A tubeless setup promises an increase in puncture protection and an ability to run lower air pressures as well as a faster ride thanks to lower rolling resistance. If running tubeless is important to you, be sure to choose a gravel bike with tubeless compatible wheels and tyres.

Gravel bike disc brakes
 

Finance

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Delivery & Guarantee

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We will give you a full refund or exchange on any item that is returned to us unused/unfitted, in a resaleable condition and in its original packaging (where possible).

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For more information please visit our Returns & Warranty page.

What's In The Box

What's In The Box

As cyclists ourselves, we know you will be keen to get out on your new bike as soon as possible. That's why we provide you with all the essential kit you need to get your shiny new bike rolling for the first time.

Most bikes don't come with pedals as standard so we include a set of basic pedals, free of charge with every bike we send out. We will also provide you with a pedal spanner to fit them and a 9-key trail tool, along with full instructions for setting your bike up out of the box. Each bike is sent out with a 16 point, quality control check sheet so you can be confident that your bike has been fully checked by our qualified mechanics.

What's in the box
  • Basic setup instructions
  • 16 point quality control checklist
  • Free tredz multitool
  • Free tred pedal spanner
  • Free basic pedals
  • Free drawstring kit bag
  • Free bike insurance voucher

All these items are provided at no extra charge and are packed into a Tredz drawstring bag that doubles up as a handy backpack for carrying your ride essentials.

  • Basic bike setup instructions
  • Free ‘basic’ pedals
  • Free Tredz pedal spanner
  • Free Tredz 9-key trail tool
  • Free Tredz drawstring bag
  • Free 8 weeks insurance voucher
  • 16 point, quality control check sheet

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