Genesis Core 20 27.5" 2017 Mountain Bike
Frame:ALX7+ 6061 Double-Butted Aluminium
Fork:Rockshox Recon Silver RL, Solo Air, 120mm.
Headset:Prestine PT-1800H ID:44/ID:44
Stem:Genesis 60mm /+7deg
Bars:Genesis alloy / 740mm x 15mm rise / Genesis Loc On
Front Brake:Shimano M395 180mm
Rear Brake:Shimano M395 160mm
Brake Lever:Shimano M395
Front Mech:Shimano Acera FD-M3000
Rear Mech:Shimano Acera RD-M3000
Shifters:Shimano Acera SL-M3000
Speed:27
Rims:WTB STP i23 TCS 27.5"
Front Hub:Shimano FH-RM35 32h
Rear Hub:Shimano FH-RM35 32h
Spokes:Stainless steel 14g
Front Tyre:Maxxis Ardent 27.5x2.25"
Rear Tyre:Maxxis Ardent 27.5x2.25"
Seat Post:Genesis Alloy / 30.9x400mm
Chainset:Shimano Acera FC-M3000 / 40/30/22T
Bottom Bracket:Shimano BB-ES300 73-118mm
Chain:KMC X9
Cassette:Shimano CS-HG300-9 / 11-34T
Pedals:Genesis
Weight:13.58kg

What are the delivery costs?

We offer Free UK Mainland Delivery on all orders over £20. Products shipped to outlying UK regions are excluded from free shipping.

Standard delivery is normally 2 - 5 working days.

Please view our delivery page for full information on UK and international delivery costs.

Pound-for-pound, the Core 20 is arguably one of the best equipped bikes available in our range.


We've plumped here for close ratio 40/30/22T gearing, which, when combined with the 11-34T cassette out back gives an optimal spread of gears for the larger 27.5" wheels. Keeping you suspended is a Rockshox Recon Silver RL Solo Air fork, offering 120mm of plush travel that's 100% adjustable for rider weight and preferred riding style for stable, confidence-inspiring surefooted control. 

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