Hybrid E-Bike for town and countryside
The Mark2 X-Cross 450S is a lightweight flat bar step-through eBike designed for men and women who demand versatility from their ride. This hybrid gravel electric bike bridges the gap between a comfortable city commuter and a rugged off-road adventurer. Featuring a premium Danish Promovec motor and a 460Wh removable battery, the X-Cross 450S delivers a smooth, powerful boost that helps you conquer steep hills and long distances with ease, making it a top choice for the UK’s varied landscape.
What sets the 450S apart are its performance-driven upgrades, including a lower-geared Shimano 11-34T 10-speed cassette for superior hill-climbing capability and Schwalbe G-One 4Season gravel tyres. These high-grip tyres, combined with the Suntour XCM front suspension (63mm travel with lockout), ensure maximum control and comfort whether you are navigating forest trails or potholed urban streets. The lightweight 6061 aluminium alloy frame ensures the bike remains nimble and easy to handle, even when the motor is off.
Fully UK road legal, the X-Cross 450S comes equipped with a boost throttle for immediate pedal-assist power and integrated AXA high-output LED lighting for safety during night rides. At Eco Bike Co, we believe in long-term reliability, which is why this model includes an industry-leading 5-year transferable warranty and lifetime support.
How is the frame size measured?
Most E-bikes are measured from the centre of the crank to the base of the seat post tube. However, some E-bike manufacturers may measure their bikes differently depending on their style.

What is the right frame size for me?
This helpful guide will help you to find which size electric bike is best suited to you. If you would like a bit more information, don't hesitate to get in touch.
HYBRID ELECTRIC BIKES
MENS
| Rider Height | Recommended Hybrid Frame Size | |||
|---|---|---|---|---|
| Feet & Inches | Centimetres | Frame Size (inches) | Frame Size (cm) | Frame Size |
| 4'10" - 5'2" | 148cm - 158cm | 13" - 15" | 33 - 39 | X-Small |
| 5'2"" - 5'6"" | 158cm - 168cm | 15"-16" | 38 - 44 | Small |
| 5'6" - 5' 10" | 168cm - 178cm | 17" - 18" | 43 - 47 | Medium |
| 5'10" - 6'1" | 178cm - 185cm | 19" - 20" | 48 - 52 | Large |
| 6'1" - 6'4" | 185cm - 193cm | 21" - 22" | 53 - 57 | X-Large |
| 6'4" - 6'6" | 193cm - 198cm | 23" - 24" | 58 - 61 | XX-Large |
WOMENS
| Rider Height | Recommended Women's Hybrid Frame Size | ||
|---|---|---|---|
| Feet & Inches | Centimetres | Frame Size (inches) | Frame Size |
| 4'10" - 5'2" | 148cm - 158cm | 13" - 14" | X-Small |
| 5'2"" - 5'6"" | 158cm - 168cm | 15" - 16" | Small |
| 5'6" - 5' 10" | 168cm - 178cm | 17" - 18" | Medium |
| 5'10" - 6'1" | 178cm - 185cm | 19"+ | Large |
ELECTRIC MOUNTAIN BIKES
MENS
| Rider Height | Recommended Mountain Frame Size | |||
|---|---|---|---|---|
| Feet & Inches | Centimetres | Frame Size (inches) | Frame Size (cm) | Frame Size |
| 4'10" - 5'2" | 148cm - 158cm | 13" - 14" | 33 - 37 | X-Small |
| 5'2"" - 5'6"" | 158cm - 168cm | 15" - 16" | 38 - 42 | Small |
| 5'6" - 5' 10" | 168cm - 178cm | 17" - 18" | 43 - 47 | Medium |
| 5'10" - 6'1" | 178cm - 185cm | 19" - 20" | 48 - 52 | Large |
| 6'1" - 6'4" | 185cm - 193cm | 21" - 22" | 53 - 57 | X-Large |
| 6'4" - 6'6" | 193cm - 198cm | 23" - 24" | 58 - 61 | XX-Large |
WOMENS
| Rider Height | Recommended Women's Mountain Frame Size | ||
|---|---|---|---|
| Feet & Inches | Centimetres | Frame Size (inches) | Frame Size |
| 4'10" - 5'2" | 148cm - 158cm | 13" - 14" | X-Small |
| 5'2" - 5'6" | 158cm - 168cm | 15" - 16" | Small |
| 5'6" - 5' 10" | 168cm - 178cm | 17" - 18" | Medium |
| 5'10" - 6'1" | 178cm - 185cm | 19"+ | Large |
COMMUTER ELECTRIC BIKES
MENS
| Rider Height | Suggested Commuter Bike Size | ||
|---|---|---|---|
| Feet & Inches | Centimetres | Frame Size (cm) | Frame Size |
| 4'10" - 5'0" | 148cm - 152cm | 47cm - 48cm | XX-Small |
| 5'0" - 5'3" | 152cm - 160cm | 49cm - 50cm | X-Small |
| 5'3" - 5'6" | 160cm - 168cm | 51cm - 53cm | Small |
| 5'6" - 5'9" | 168cm - 175cm | 54cm - 55cm | Medium |
| 5'9" - 6'0" | 175cm - 183cm | 56cm - 58cm | Large |
| 6'0" - 6'3" | 183cm - 191cm | 58cm - 60cm | X-Large |
| 6'3" - 6'6" | 191cm - 198cm | 61cm - 63cm | XX-Large |
WOMENS
| Rider Height | Suggested Women's Commuter Frame Size | ||
|---|---|---|---|
| Feet & Inches | Centimetres | Frame Size (cm) | Frame Size |
| 4'10" - 5'1" | 147cm - 155cm | 44cm - 46cm | XX-Small |
| 5'1" - 5'3" | 155cm - 160cm | 47cm - 49cm | X-Small |
| 5'3" - 5'5" | 160cm - 165cm | 50cm - 52cm | Small |
| 5'5" - 5'8" | 165cm - 172cm | 53cm - 55cm | Medium |
| 5'8" - 5'10" | 172cm - 180cm | 56cm - 57cm | Large |
Large Range
Powerful Motor
10 Speed Gears
specifications
Battery and Range
Motor
Walk Assist
LCD Display
Gears
Brakes
Lights
Frame
Fork
Weight
Wheels and Tyres
Rider Height and Weight
Manual
Returns
If you would like to cancel your order, please contact us immediately at info@ecobikecompany.com or on 0333 050 3189. Please include your order number when contacting us.
If your order has not yet left the manufacturer's warehouse, we should be able to stop it shipping, and issue you a refund immediately.
Please note – when returning a product, it must be returned in ‘as new’ condition, with all components included, in their original packaging. There will be a charge for the return.
Returns - Damages & Faulty
We ask that you thoroughly inspect all items at the point of delivery. We advise you not to accept delivery of any damaged items. If you discover that an item has been damaged, please send clear photos of the damaged items to info@ecobikecompany.com so that we can open an insurance claim on your behalf.
If your bike develops a fault through normal use (as outlined in the manufacturer's manual) you could be entitled to a repair or replacement as covered with the warranty. Please send through details of the fault to
info@ecobikecompany.com and we will arrange the repair or replacement with the manufacturer. Please note – any fault caused due to misuse of the bike is not covered by this policy. Please ensure you read the manufacturer's manual in detail before using your electric bike to avoid voiding your warranty.
The warranty applies as follows: 5 years or 5000 miles (whichever is sooner) for the frame, battery, motor and all other parts (including the paint and clear coat) from the date of purchase. For the parts of third parties, the guarantee conditions for the relative producer are valid and applicable.
The warranty does not apply to parts that are susceptible to wear and tear, such as tyres, chains, brakes, cables, cassettes, derailleur except in the circumstance that they are assembly or material defects.
THE WARRANTY LAPSES IN THE EVENT:
- The bike has not been serviced by a qualified and reputable bike shop/ mechanic annually or every 1000 miles (whichever is sooner)
- The bike has been used for rental or any other professional purposes
- The bike has been subject to damage due to use in competitions, jumping, downhill, trial or due to exposing/ riding the bike in severe conditions or climates
- The bike has been involved in an accident
- The bike has been operated in a manner not concurrent to its sort and type. This includes any other means that deviate from the usual
- The bike has been assembled with non-original parts
- Mark2 Bikes has the ultimate decision on the acceptance of a guarantee claim and the choice between replacement or reimbursement
