Why buy your bike from Sigma Sports?
Don't hesitate to reach out to us. It's our goal to answer all of your questions and offer the best advice from our experts. We’ll be happy to answer any questions you may have. Contact us now or visit us in-store.
Save up to 47% with any one of our 11 Cycle to Work partners, and get the health benefits of a new bike in exchange for tax free salary sacrifice. To find out more about our various partners and how to apply click here.
Choose between Free Bike Delivery - to your home or place of work - or our new Premier Bike Delivery Service £99.99 and have your bike delivered "ready to ride" and set up to your measurements with seatpost and pedals adjusted on arrival by a qualified bike mechanic. Either way, our Customer Care team will be in touch to arrange a delivery date to suit you.
We've partnered with Laka to offer you 30 days free bike Insurance on your new bike purchase over £400. Click here for more info and find out how to claim.
Haibike HardSeven 4 Electric Mountain Bike 2022
Robust and reliable, the Haibike HardSeven 4 Electric Mountain Bike is a perfect entrance into the world of assisted cycling. With agile geometry and a powerful Bosch Performance Line motor, it excels on singletrack, cycle paths and more, offering excellent performance for its price point.
The 27.5” wheels are quick to accelerate and easy to manoeuvre, and the reliable Shimano drivetrain provides a wide range of gears and crisp shifting. A Suntour XCM32 suspension fork reduces fatigue on choppy terrain, and the Bosch PowerTube 400Wh battery provides a wide range for mid-length rides.
Browse our range of Haibike electric mountain bikes today.
Highlights
- Reliable Bosch Performance Line motor system with 65Nm of torque, 25km/h maximum assistance
- The robust and durable aluminium frame is lightweight and stiff
- Bosch PowerTube 400Wh battery sees a high-capacity for increased mileage
- SR Suntour XCM32 Boost DS with 120mm of supple suspension travel
- Shimano Alivio drivetrain offers reliable 9-speed performance
- Powerful Tektro hydraulic disc brakes
- 27.5” wheels offer increased manoeuvrability
Battery Specifications
- Maximum Assist: 250w / 65Nm torque
- Motor Weight: 2.9kg
- Battery Power: 400Wh
Technical Specification
| Frame | Haibike, HardSeven Gen3 Intube, aluminium 6061 |
| Fork | SR Suntour, XCM32 Boost DS, steel spring/oil, 120mm, Aluschaft 1 1/8 - 1 1/2" tapered, 15 x 110mm thru-axle Boost |
| Stem | XLC, Alu, A-head |
| Grips | Haibike, MTB grips |
| Handlebar | XLC, Topflat, 720mm |
| Front Brake | Tektro M275, 180mm, 2-piston, hydraulic disc |
| Rear Brake | Tektro M275, 180mm, 2-piston, hydraulic disc |
| Brake Levers | Tektro M275 |
| Rear Derailleur | Shimano, Alivio M3100, 9-speed |
| Shifter | Shimano, Alivio M3100, 9-speed |
| Chain | KMC, e9S |
| Cassette | SunRace CSM90, 11-36t |
| Crankset | Haibike, forged, aluminium |
| Front Wheel | Rim - Schürmann, Yak25, with eyelets, hollow rim, aluminium / Hub - Haibike, Alu Nabe, 6-bolt standard |
| Rear Wheel | Rim - Schürmann, Yak25, with eyelets, hollow rim, aluminium / Hub - Haibike, Alu Nabe, 6-bolt standard |
| Front Tyre | Impac Smart Pac, 57-584, 27.5" x 2.25", clincher |
| Rear Tyre | Impac Smart Pac, 57-584, 27.5" x 2.25", clincher |
| Saddle | XLC, MTB |
| Seatpost | XLC, Aluminium, 31.6mm |
| Pedals | Freeridepedal, aluminium |
| Motor | Bosch, Performance Line, 250W, 65 Nm, 25 km/h |
| Battery | Bosch PowerTube 400Wh |
| Ui/Remote | Bosch Purion |
| Electric assisted speed limit | 15.5 mph / 25 km/h |
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