Northrock CTM Ultimate Crossover Bike, 18 Inch Aluminium Frame, 21 Speed Shimano Altus

Northrock CTM Ultimate Crossover Bike

The Northrock CTM is a crossover hybrid bike for riders who want road-bike pace on tarmac and mountain-bike grit when the path turns to gravel. Its 18 inch 6061 aluminium frame blends mountain geometry with road efficiency, so one bike covers the weekday commute, the towpath and the weekend explore. Shimano Altus 21-speed gearing and Tektro disc brakes keep it responsive everywhere.

A Bike That Refuses to Choose

Pure road bikes struggle the moment the surface turns loose, and full mountain bikes feel sluggish and heavy in town. The CTM takes the middle path properly. A hand-built, press-formed 6061 aluminium frame with integrated cables stays light and responsive, Tektro mechanical disc brakes keep stopping consistent in wet or dry conditions, and an SR Suntour NEX fork with 63mm travel handles unpredictable terrain. Kenda 700x38c treaded tyres roll easily on pavement yet still grip on a dusty trail. At 14.2 kg, it stays easy to lift and store.

Go-Anywhere Hardware

• Shimano Altus 21 Speed: precise, consistent shifting through integrated trigger shifters and a Shimano triple crank.
• Tektro Mechanical Disc Brakes: responsive control regardless of conditions, from wet tarmac to muddy bridleways.
• SR Suntour NEX Fork: preload adjustment and 63mm travel soak up kerbs, roots and rough patches on the route.
• Kenda 700x38c Treaded Tyres: cross over smoothly from trail to pavement without having to swap wheels or tyres.

Crossover Hybrid Bike Technical Sheet

For Mixed-Surface Adventurers

Take the cycle path to work in the morning, then detour onto a gravel trail on the way home simply because the evening is too good to waste. Velo saddle and grips keep longer rides comfortable, and the stainless steel spokes are designed to handle the elements.

Stocked for Your Next Ride

We deliver to mainland UK addresses (with tracking). Delivery options, costs and estimated times are shown at checkout and in our Shipping Policy.

FAQs

Q: Will the CTM frame cope with rough tracks?

A: It uses a hand-built 6061 aluminium press-formed frame paired with an SR Suntour NEX suspension fork offering 63mm of travel for unpredictable terrain. Alloy double wall rims and stainless steel spokes add strength for regular mixed-surface riding.

Q: Is the bike difficult to assemble, and what brakes does it use?

A: Assembly is described as easy, and the tools you need are included. The CTM uses Tektro mechanical disc brakes, which are cable operated and give responsive stopping in wet or dry weather, alongside Shimano integrated trigger shifters.

Q: When will my CTM arrive?

A: We deliver to mainland UK addresses (with tracking). Delivery options, costs and estimated times are shown at checkout and in our Shipping Policy.

Last updated: November 2026

Fitness Accessories Hub, operated by MENSARK LTD, delivers across mainland Great Britain.

1. Order Processing

Orders are processed within 1 to 2 business days (Monday to Friday, excluding UK bank holidays). If there is a delay because of high order volumes or courier issues, we will email you straight away.

2. Delivery Options and Timelines

Standard Delivery: 3 to 5 business days to mainland UK addresses.
Express Delivery: 2 to 3 business days to mainland UK addresses.
Delivery charges depend on your order value and the option you choose, and are shown at checkout before you pay.

3. Areas We Do Not Currently Deliver To

Scottish Highlands: AB36-38, AB55-56, FK17-21, IV1-39, IV52-54, IV63, KW1-14, PA21-40, PH19-26, PH30-41, PH49-50.
Scottish Islands: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3.
Northern Ireland: all BT postcodes.
Isle of Man: all IM postcodes.
Isles of Scilly: TR21-25.
Channel Islands: all GY (Guernsey) and JE (Jersey) postcodes.

4. Supplier Delivery

Some items are sent directly from our suppliers or their delivery partners, so your parcel may arrive in the supplier's packaging or separately from other items in the same order. Fitness Accessories Hub remains your seller and your contact for any delivery issue.

5. Order Tracking

When your order is dispatched, you will receive an email with your tracking number and a link to follow your parcel. Tracking can take up to 24 hours to become active.

6. Delayed, Lost or Damaged Parcels

If your order arrives damaged or is significantly delayed, please email support@fitnessaccessorieshub.co.uk within 48 hours of the delivery date, with your order number and photos of the packaging and product. We will arrange a replacement or refund where appropriate.

7. Failed Delivery

Please make sure your delivery address is correct at checkout. If a parcel comes back to us because of an incorrect address or a missed collection, we may need to charge for redelivery.

Contact Us

Email: support@fitnessaccessorieshub.co.uk
Phone / WhatsApp: +44 7462 229248 (Monday to Friday, 9:00 AM to 5:00 PM UK time)
Fitness Accessories Hub is a trading name of MENSARK LTD, a private limited company registered in England and Wales. Company Number: 16552046. Registered Office: 497 High Road, Ilford, Essex, IG1 1TZ, United Kingdom.

How your order works

This order is based on a promise to sell. The product will be sourced from our supplier and delivered to you within the stated timeframe. The sale will be completed once the item is delivered to you. Kindly leave honest feedback after receiving your order.