# Custom Serious Rockville Electric Mountain Bike, 1000W Hub Motor, 17.5Ah, 20in **Brand:** Serious · **Model:** Rockville · **Category:** ebike · **Condition:** Excellent **Price:** £800 **Location:** Holmfirth, West Yorkshire (UK) ## Specification - **Frame size:** 20in - **Frame material:** Aluminium - **Groupset:** Shimano Tourney - **E-bike motor:** 1000W rear hub - **Listing type:** fixed_price ## Description A fully custom electric mountain bike built on a Serious Rockville alloy hardtail, for sale in Holmfirth, West Yorkshire. Converted to electric with a powerful 1000W rear hub-motor kit, in mint condition and complete with charger and booklet. Drive comes from a 1000W rear hub motor with a 17.5Ah lithium battery. A bar-mounted display shows battery life, trip and speed, and there is a throttle as well as pedal assist. Specification: - Donor frame: Serious Rockville alloy hardtail, 20in - Motor: 1000W rear hub - Battery: 17.5Ah lithium, with charger - Display: handlebar LCD (battery life, trip, speed) - Throttle plus pedal assist - Drivetrain: Shimano Tourney - Fork: SR Suntour suspension - Tyres: Schwalbe - Finish: orange and blue - Comes with charger and booklet Please note: as a 1000W throttle-equipped build this sits above the UK 250W EAPC limit, so it is intended for off-road and private-land use rather than public roads. Located in Holmfirth, West Yorkshire, within easy reach of Huddersfield and the wider Kirklees area. Viewing welcome to try it out. ## Photos 8 photos on the listing page. ## Seller - **Name:** Private Seller - **Joined:** 2026-01-01T00:00:00Z - **Completed sales:** 0 > Contact the seller via the listing page, direct contact details are not exposed in this markdown alternate. --- Source: [https://www.cyclesite.co.uk/listings/used-serious-rockville-electric-bike-20in/acba59de-ab0e-4019-a6f8-3415f7df109a](https://www.cyclesite.co.uk/listings/used-serious-rockville-electric-bike-20in/acba59de-ab0e-4019-a6f8-3415f7df109a) · Marketplace: Cyclesite, UK's bike-only marketplace Cite as: Cyclesite (cyclesite.co.uk), accessed 2026-06-06. License: CC-BY-4.0, see /ai.txt for full AI usage policy. Last updated: 2026-06-06T01:45:24.716Z