TrekPowerfly+ FS 8 Gen 4
- Motor
- Bosch Performance Line CX85–120 Nm (Trek figure)
- Battery
- 800 WhRemovable (RIB 2.0)
- Travel F / R
- 150 / 120 mm
- Wheels
- 29" (S: 27.5")
- Frame
- Alloy
Overview
The Trek Powerfly+ FS 8 Gen 4 (£5,250) is the top build of the Powerfly+ FS: alloy frame, Bosch Performance Line CX motor with 800 Wh, Fox Rhythm 36 fork, Fox Float Rhythm shock, Shimano XT Di2 M8260 and Shimano XT M8220 4-piston hydraulic disc brakes.
The Powerfly+ FS is Trek's full-suspension adventure e-MTB: an Alpha Platinum aluminium frame with 120 mm of rear travel, 29-inch wheels (27.5-inch on size S) and the Bosch Performance Line CX motor with a removable 600 or 800 Wh battery.
- 120 mm rear travel
- Bosch Performance Line CX
- 600 or 800 Wh removable battery
- Alpha Platinum aluminium frame
Gallery
Photos: Trek
Full specifications
Frame & suspension
- Shock
- Fox Float Rhythm, 2-position damper, 210x50 mm
- Frame
- Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), tapered headtube, guided internal routing, Motor Armor, Mino Link adjustable geometry, adjustable leverage rate, 34.9 mm seat tube, ABP, UDH, rack and mudguard mounts, Boost 148, 120 mm travel
- Fork
- Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44 mm offset, Boost110, 15 mm Kabolt axle, 150 mm travel
E-system
- Battery
- Bosch PowerTube 800 Wh, smart system
- Charger
- Bosch standard 4A, 230V, smart system
- Motor
- Bosch Performance Line CX (Europe and APAC: 25 km/h, US and ROW: 20 mph / 32 km/h)
Drivetrain
- Chain
- Shimano Deore M6100, 12-speed
- Rear derailleur
- Shimano XT Di2 M8260, 12-speed
- Cassette
- Shimano XT M8100, 10-51, 12-speed
- Crankset
- E*thirteen E*spec Plus, 160 mm length
- Shifter
- Shimano XT Di2 M8250, 12-speed
Brakes
- Brake rotor
- Shimano RT-6B750, 6-bolt, 200 mm
- Brake
- Shimano XT M8220 4-piston hydraulic disc
Wheels & tyres
- Skewer rear
- Bontrager Switch thru axle, removable lever
- Tyre
- Bontrager Gunnison Pro XR, Tubeless-Ready, wire bead, 60 tpi, 27.5x2.40"
Cockpit
- Headset
- 1-1/8'' threadless, sealed cartridge bearings
- Stem
- Bontrager Rhythm Comp, 31.8 mm, 0-degree, 50 mm length
- Saddle
- Bontrager Verse P3, steel rails
- Handlebar
- Bontrager Comp, alloy, 31.8 mm, 40mm rise, 780 mm width
- Grips
- Trek Line Comp, nylon lock-on
- Seatpost
- Bontrager Line Dropper, 100mm travel, MaxFlow, internal routing, 31.6 mm, 310 mm length
Other
- Head set
- FSA IS-2, 1-1/8" top, 1.5" bottom
- Spokes
- 14 g stainless steel, black
- Spokes
- 14g stainless
- Spokes
- 14g stainless steel, black
- Hub front
- Bontrager alloy, sealed bearing, alloy axle, 6-bolt, Boost110, 15 mm thru axle
- Pedal
- VP-536 nylon platform
- Seat collar
- Bolt-on, 36.4 mm
- Computer
- Bosch Kiox 300, smart system
- Computer
- Bosch LED remote, smart system
- Hub rear
- Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano freehub, Boost148, 12 mm thru axle
- Mudguard
- Trek custom mudguard
Manufacturer specification — source. Specs and prices can change; check with the brand or your dealer.
Powerfly+ FS geometry
| Size | S | M | L | XL |
|---|---|---|---|---|
| Wheel size | 27.5" | 29" | 29" | 29" |
| Seat tube length | 380 mm | 400 mm | 420 mm | 450 mm |
| Seat tube angle | 71.1° | 71.3° | 71.2° | 72.4° |
| Effective seat tube angle | 77.0° | 77.0° | 77.0° | 77.0° |
| Head tube length | 130 mm | 110 mm | 130 mm | 150 mm |
| Head angle | 65.0° | 66.0° | 66.0° | 66.0° |
| Effective top tube | 563 mm | 595 mm | 630 mm | 654 mm |
| BB height | 330 mm | 335 mm | 335 mm | 335 mm |
| BB drop | 30 mm | 45 mm | 45 mm | 45 mm |
| Chainstay length | 458 mm | 461 mm | 461 mm | 461 mm |
| Fork offset | 44 mm | 44 mm | 44 mm | 44 mm |
| Trail | 123 mm | 125 mm | 125 mm | 125 mm |
| Wheelbase | 1201 mm | 1223 mm | 1257 mm | 1290 mm |
| Standover | 756 mm | 780 mm | 775 mm | 778 mm |
| Reach | 425 mm | 450 mm | 475 mm | 500 mm |
| Stack | 597 mm | 629 mm | 647 mm | 666 mm |
Source: Trek.
Powerfly+ FS: builds compared
Powerfly+ FS range →| Powerfly+ FS 4 Gen 4 | Powerfly+ FS 4 800 Gen 4 | Powerfly+ FS 5 Gen 4 | Powerfly+ FS 6 Gen 4 | Powerfly+ FS 8 Gen 4 | |
|---|---|---|---|---|---|
| Price | £3,500 | £3,700 | £4,000 | £4,500 | £5,250 |
| Frame | Alloy | Alloy | Alloy | Alloy | Alloy |
| Fork | RockShox Recon Silver RL, Solo Air | RockShox Recon Silver, Solo Air spring | RockShox Psylo Silver RC, Motion Control | Fox AWL Rail HD, Rail 2.0 damper | Fox Rhythm 36, Float EVOL air spring |
| Shock | RockShox Deluxe Select R | RockShox Deluxe Select | RockShox Deluxe Select | Fox Float Rhythm | Fox Float Rhythm |
| Derailleur | Shimano CUES U6000 GS | Shimano CUES U6000 GS | Shimano Deore M8200 | SRAM Eagle 70 | Shimano XT Di2 M8260 |
| Brakes | Tektro Gemini SL 4 piston hydraulic brake | Tektro HD-M5140 hydraulic disc | Shimano MT620 hydraulic disc | Shimano XT M8120 4-piston hydraulic disc | Shimano XT M8220 4-piston hydraulic disc |
Powerfly+ FS 8 Gen 4: FAQ
How much does the Trek Powerfly+ FS 8 Gen 4 cost?
£5,250 (RRP UK, VAT incl.). The Powerfly+ FS range runs from £3,500 (Powerfly+ FS 4 Gen 4) to £5,250 (Powerfly+ FS 8 Gen 4). Prices vary by country and dealer.
What motor and battery does the Trek Powerfly+ FS 8 Gen 4 have?
Bosch Performance Line CX (85–120 Nm (Trek figure)). 800 Wh battery — removable (RIB 2.0).
How much suspension travel does the Trek Powerfly+ FS 8 Gen 4 have?
150 mm at the fork and 120 mm at the rear, on 29" (S: 27.5") wheels.
What sizes does the Trek Powerfly+ FS 8 Gen 4 come in?
S, M, L, XL. Check the geometry table to compare reach and stack between sizes.
What is the difference between the Powerfly+ FS 8 Gen 4 and the Powerfly+ FS 6 Gen 4?
They share the Powerfly+ FS frame platform and motor; the differences are in the parts — fork: Fox Rhythm 36 vs Fox AWL Rail HD; derailleur: Shimano XT Di2 M8260 vs SRAM Eagle 70; price: £5,250 vs £4,500.
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