Genesis Day One 20 Singlespeed Bike 2016

Product Code: 145601
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Product Description

The Day One 20 brings all the associated benefits of singlespeed riding with it’s single, ultra-efficient optimised chainline and adds the practicality of Shimano’s Nexus 8sp internal geared hub with its’ wide-range gearing and sealed-from-the-elements drivetrain.

Returning a similar range to a conventional double setup (30-92 gear inches, with a whole lot of useable range in between) and with mounts for racks both front and rear, the Day One 20 is the ideal low-maintenance workhorse for those wanting to perhaps carry moderate loads efficiently and comfortably over undulating landscapes. It's a supremely versatile bike - we've even seen them geared down (via a simple and affordable sprocket change out back) and handle some pretty demanding expeditions with aplomb.

With its beautifully simplistic bar-end shifter and functional disc brakes, you’ll struggle to find a more reliable, maintenance-friendly (in the sense that you don’t have to do much) geared bike…


Mjölnir chromoly

AKA ‘Thor’s Hammer’ and pronounced ‘Myol-n(ee)r‘ (rolls off the tongue, eh?). Our double-butted, cold-drawn, seamless, Taiwanese chromoly tubeset also goes by the aliases of 4130, Cr-Mo and Chromo. It’s a like-for-like replacement for other, identical branded chromoly tubing and ultimately means a saving can be passed onto you via either a healthy price drop or a little more room for up-speccing elsewhere without sacrificing performance.

Rack & 'guard ready

The Day One is a versatile bike, designed to be used daily in all conditions. As such you’ll find mudguard eyelets front & rear along with generous clearances, all designed to make fitting full length mudguards a breeze. There are also rack eyelets front & rear for light load carrying duties should you wish.

Shimano Nexus 8 IGH

Shimano's robust 8sp 'everything inside' IGH (internal geared hub) offers a wide gear range (402%) with the mile after mile of low maintenance, hassle-free riding that comes with a fixed, optimal chainline. Follow the serivce intervals and enjoy mile-after-mile of low maintenance ownership.

Microshift barcon shifter

Sometimes the smaller guys are the answer for the type of products that the bigger bicycle parts manufacturers will dismiss, deeming there not enough demand to warrant production. That's the case here with Microshift's excellent 8sp bar-end shifter for Shimano 8sp internal geared hubs (IGH), allowing us to pair dropbars with Shimano's excellent new Nexus 8sp IGH. Light, effective and good'ol plain relaible in a get-the-job-done sort of way (the cyclotourist's prefferred shifting option)


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* Prices are estimates and will be calculated at checkout based on your minimum deposit.
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Frame and Fork

Frame: Genesis Mjölnir Seamless Double-Butted Cromoly

Fork: Cr-Mo Unicrown Disc


FSA TH-857 Semi-Cartridge

Colour: Paprika Red

Weight: 12.27kg (Med w/o pedals)

Sizes: XS/S/M/L/XL


Shifters: Microshift BS-N08 (Inter 8) Bar-End

Rear Derailleur: N/A

Front Derailleur: N/A

Chainset: Samox 42T Single w/ Chainguard

Bottom Bracket: TH BB-7420ST, 68x122.5mm

Chain: KMC X1 (1/2" x 3/32")

Freewheel: Shimano SM-GEAR, 20T

Wheels and Braking

Hubs: Joytech 6-Bolt Disc Nutted / Shimano SG-C6000-8D Nexus 8sp

Rims: WTB STp i19 TCS, 32H

Spokes: 14G Stainless Silver w/ Brass Nipples

Tyres: Continental Sport Contact II SL, 700x35c

Brakes: Promax Render-R w/ Jagwire KEB-SL Compressionless Outer

Brake Levers: Promax BL-253

Contact Zones

Handlebars: Genesis Road Compact (D125/R70mm)

Stem: Genesis Road (+/-7

Grips: Genesis Cork Gel

Saddle: Genesis Road Comfort

Seatpost: Genesis

Seat Clamp

Pedals: VP-383S w/ Toeclip


Day One 20 Geometry

1 - Horizontal Toptube Length (mm)524544561582605
2 - Seat Angle (°)7473.573.57372.5
3 - Headtube Length (mm)115135155175195
4 - Head Angle (°)717171.571.572
5 - Seat Tube Length (C-T, mm)470500530550580
6 - BB Drop (mm)7373737373
7 - Chanstay Length (mm)430430430430430
8 - Fork Offset (mm)5050505050
9 - Trail (mm)6969666663
10 - Wheelbase Length (mm)10071023103510521063
11 - Standover (mm)756784808826850
12 - Stack (mm)553572593612633
13 - Reach (mm)365375385395405
Stem (mm)100100100110110
Handlebar (mm)400420420440440
Crankarm (mm)170170172.5175175