Scott Fastlane 10
The Scott Fastlane 10 is a lightweight carbon drop-bar e-road bike with Shimano Ultegra Di2 and a discreet TQ HPR40 motor, built for road cyclists who want subtle climbing assistance rather than maximum power.
- TQ HPR40 motor (40 Nm, 25 km/h cutoff): Discreet climbing help that tops up your own effort without overpowering the ride
- Integrated 290 Wh battery with supplied 2 A charger: Keeps the bike light while charging fully in around three hours
- Shimano Ultegra Di2 2x12 electronic shifting: Precise, low-effort gear changes across long road days
- Shimano BR-R8170 hydraulic disc brakes, 160 mm rotors: Confident, consistent stopping in all weather
- HMX carbon frame, approximately 10.6 kg claimed weight: Rides like a genuine lightweight road bike rather than a heavy e-bike
- Integrated Campbell iL rear light with TQ app, Bluetooth and ANT+: Built-in visibility and ride data without extra kit to manage
Scott Fastlane 10 Deals
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Bikesy's Verdict
The Fastlane 10 suits a road cyclist who wants their bike to still feel and ride like a road bike, just with a quiet hand on the climbs. Ultegra Di2 shifting, proper hydraulic disc brakes and a claimed weight of around 10.6 kg give it genuine road-bike manners, while the TQ HPR40's 40 Nm and 25 km/h cutoff add help without ever taking over. The main limitation is the modest 290 Wh battery, which asks committed hill-climbers to plan around charging or budget for the optional range extender rather than expecting all-day assisted riding as standard. For someone prioritising ride feel and electronic shifting over raw motor power, it's a genuinely appealing, well-specified bike.
Pros
- Claimed weight of around 10.6 kg and an HMX carbon frame keep the ride feeling like a genuine road bike
- Shimano Ultegra Di2 electronic shifting and BR-R8170 hydraulic disc brakes bring a proper high-end road groupset
- TQ HPR40 motor's 40 Nm output and 25 km/h cutoff give discreet, non-intrusive climbing assistance
- Integrated rear light and TQ app connectivity add useful extras without visual bulk
Cons
- Only one UK build is currently offered, so there's no cheaper or higher-spec Fastlane 10 alternative to choose between
- Fitted 290 Wh battery is modest for an e-bike; extending range means buying the optional 160 Wh extender separately
- The frame guarantee's full five-year term depends on registering within a year and keeping up annual authorised-dealer servicing
A road bike first, with quiet help on the climbs
The Fastlane 10 is aimed at a rider who already loves the feel of a proper road bike and just wants a bit of help holding pace when the road tips up, rather than someone after a heavyweight tourer with a big battery. Scott builds it around its Fastlane Road Disc HMX carbon frame and a rigid HMX carbon fork, and because the motor and battery are worked into that frame rather than bolted onto a heavier structure, the claimed weight of around 10.6 kg keeps it feeling like a lightweight road bike rather than an e-bike with drop bars. That weight figure isn't tied to a specific frame size in Scott's own numbers, so treat it as a useful guide to the bike's character rather than a guarantee for your exact size.
How the TQ motor changes a ride
The assistance comes from a TQ HPR40 mid-drive motor, which delivers up to 40 Nm of torque and, under UK and EU rules, cuts out once you reach 25 km/h. That's a modest output next to punchier e-road systems some riders will have tried, and it's a deliberate choice here: this is a bike for topping up your own effort on a long climb, not one that does the climbing for you. The motor draws from an integrated 290 Wh battery, charged with the supplied 2 A charger in around three hours according to Scott, and controlled from a bar-end LED display and a button on the brake hoods, with Bluetooth and ANT+ connectivity to the TQ app for adjusting how the assistance behaves and reviewing rides. If you know you'll want longer assisted days than the standard battery comfortably covers, Scott makes a 160 Wh range extender for the Fastlane that mounts using the bike's own fitting and cabling; it's a genuine option to plan for rather than something included in this build, and actual distance from either battery will still depend on terrain, effort and how much assistance you use.
Where the money goes
This build centres on Shimano's Ultegra Di2 groupset, with 2x12 electronic shifting through RD-R8150 and FD-R8150 derailleurs, an FSA CK-713 carbon e-bike crank running 50/34T rings, and an 11-34T cassette, giving a wide enough range for hilly routes even before the motor helps. Braking is Shimano's BR-R8170 hydraulic system with 160 mm rotors front and rear, a sensible choice on a bike that will be ridden briskly downhill as well as up. Scott has also fitted a Syncros Capital 1.0 40 Disc wheelset with Schwalbe PRO ONE 700x34C tyres, aimed at fast road and light gravel-road use rather than anything more technical. The cockpit is a Syncros Creston iC SL integrated carbon bar and stem, paired with a D-shape seatpost that has a Campbell iL rear light built into it; that light and the electronic shifting both draw from the same main battery as the motor, worth knowing since everything electrical on the bike shares one power source.
Fit and the integrated cockpit
Scott offers the Fastlane 10 from XS/49 up to XL/58, with meaningfully different stack, reach and standover figures across that range, so it's worth working from the geometry chart rather than assuming your usual road size will translate directly. Because the cockpit is an integrated one-piece design, Scott also varies the stem length, bar width and crank length by size, from an 80 mm stem and 380 mm bar on the smallest frames up to 110 mm and 400 mm on the largest. That's more built into the frame choice than on a bike with a separate stem and bar, so it's worth checking those figures against your current setup before buying, since swapping them later isn't as simple as changing a normal cockpit.
Buying with confidence
Scott's current UK list price for the Fastlane 10 is £7,399.00; you may still see some older listings referencing a lower £7,299 figure, but that reflects a previous price rather than a different specification, and neither figure tells you what any individual retailer is charging today. You may also come across the same bike offered under 2026 or 2027 labelling: Scott's UK specification doesn't establish a separate model generation behind either year label, so the sensible approach is to check that an individual listing's motor, battery, groupset and brakes match what's described here rather than reading anything into the year on the box. On the ownership side, Scott requires internal cable rerouting to be carried out by an authorised dealer rather than as a DIY job, and while the frame carries a five-year guarantee, that depends on registering as the first owner within a year of purchase and keeping up at least annual authorised-dealer servicing, with cover dropping to three years without it. None of that changes what makes the Fastlane 10 appealing in the first place: a genuinely light, quiet-riding road bike that happens to give you a helping hand when gravity works against you.
Key Features & Benefits
- Optional 160 Wh TQ range extender: Lets committed hill riders add capacity for longer assisted days without changing the standard build
- Size-specific integrated cockpit (stem length, bar width and crank length vary by frame size): Fit is built into the frame choice, so it's worth matching to your current setup before buying since it isn't a simple later swap
Geometry
Geometry, Fastlane 10 Ultegra Di2 build (standard carbon frame)
| Size | Reach | Stack | Effective top tube | Head angle | Seat angle | Chainstay | Wheelbase | Standover | Other measurements |
|---|---|---|---|---|---|---|---|---|---|
| XS/49 | 378 mm | 535 mm | 521 mm | 71.8° | 75° | 420 mm | 991 mm | 758 mm | Head tube 115 mm; fork rake 47 mm |
| S/52 | 381 mm | 559 mm | 536 mm | 72° | 74.5° | 420 mm | 1000 mm | 780 mm | Head tube 139 mm; fork rake 47 mm |
| M/54 | 385 mm | 580 mm | 551 mm | 72.2° | 74° | 420 mm | 1009 mm | 802 mm | Head tube 161 mm; fork rake 47 mm |
| L/56 | 388 mm | 602 mm | 566 mm | 72.5° | 73.5° | 420 mm | 1016 mm | 823 mm | Head tube 182 mm; fork rake 47 mm |
| XL/58 | 392 mm | 622 mm | 582 mm | 73° | 73.1° | 420 mm | 1022 mm | 849 mm | Head tube 201 mm; fork rake 47 mm |
Reviews
Independent testing
Bikeboard's Lukas Salzer rode the Fastlane 10 with Shimano Ultegra Di2 through winter conditions and found the TQ assistance quiet and natural, with a smooth, higher-cadence pedalling style suiting it best; he described the road handling as settled rather than sluggish. In a separate cold-weather test on the same bike, he reported that motor assistance stopped with the display showing roughly 10% battery remaining, while the electronic shifting and integrated rear light kept working. His longest ride on test covered 90 km with 2,000 m of climbing, using the lowest assist setting for around 95% of the climbing; that's a result from one test under specific conditions rather than a promised range for every rider.
Full Specification
Fastlane 10 Ultegra Di2 build (current UK build, RRP £7,399.00)
| Area | Specification |
|---|---|
| Frame and fork | Fastlane Road Disc HMX carbon frame and rigid HMX carbon fork; integrated cable routing; UDH interface |
| Motor and assistance | TQ HPR40 mid-drive; 40 Nm maximum torque; UK/EU assistance to 25 km/h, disengaging above that speed |
| Battery, controls and charger | Integrated TQ 290 Wh battery; TQ bar-end LED display; hood-button mode control; Bluetooth, ANT+ and TQ app; supplied TQ 2 A charger (approx. 3 hours for a full charge) |
| Drivetrain | Shimano Ultegra Di2 2x12 electronic shifting (RD-R8150 rear, FD-R8150 front); FSA CK-713 carbon e-bike crank, 50/34T; 11-34T Ultegra cassette |
| Brakes | Shimano BR-R8170 hydraulic discs; RT-CL800 160 mm rotors, front and rear |
| Wheels and tyres | Syncros Capital 1.0 40 Disc wheelset; Schwalbe PRO ONE 700x34C tyres, front and rear |
| Cockpit and fitted accessories | Syncros Creston iC SL carbon integrated cockpit; Duncan 1.0 iL D-shape seatpost with integrated Campbell iL rear light (powered from the main battery, as is the electronic shifting); iS Drop Bar Tool 2; one Coupe Cage 1.0 bottle cage |
| Approximate bike weight | 10.6 kg (Scott does not specify a reference size for this figure) |
| Maximum system weight | 120 kg total, including bicycle, rider, equipment and any luggage |
Size-specific cockpit dimensions (Fastlane 10 Ultegra Di2 build, standard carbon frame)
| Size | Stem length | Handlebar width | Crank length |
|---|---|---|---|
| XS/49 | 80 mm | 380 mm | 165 mm |
| S/52 | 80 mm | 380 mm | 165 mm |
| M/54 | 100 mm | 400 mm | 170 mm |
| L/56 | 100 mm | 400 mm | 170 mm |
| XL/58 | 110 mm | 400 mm | 170 mm |
Upgrade compatibility
| Area | Standard fit | Upgrade path | What it means for you |
|---|---|---|---|
| Additional battery | Integrated 290 Wh battery | Compatible with an optional 160 Wh TQ range extender using Fastlane-specific mounting and cabling | Extra capacity is an accessory to add, not part of the supplied battery specification |
| Tyres (Fastlane HMX frame and fork) | 700x34C fitted | Scott advertises clearance up to 38 mm, while its technical manual separately lists a 40 mm maximum tyre width | Confirm the intended tyre-and-rim combination and physical clearance before buying wider tyres |
Because the cockpit is integrated, published size-specific reach, width and stem length are worth checking carefully against your current fit before buying, across XS to XL.