TREK Powerfly+ 4 Gen 5 800Wh Electric Mountain Bike - Trek - 5342362

The Powerfly FS+ 4 800Wh is a rugged, full-power electric mountain bike built to handle tough alpi...

Best current price£2,699.00from Team Cycles

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Team CyclesTrek Unisex Black Powerfly+ 4 Gen 5 800Wh Electric Mountain Bike Gloss Dark Star And Matte Dark Web
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£2,699.00
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TredzTrek Gloss Dark Star/Matte Dark Web Powerfly+ 800 Wh Gen 5 Size 4
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£2,950.00
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Product Information

Full details

The TREK Powerfly FS+ 4 800Wh is an electric mountain bike designed for riders tackling challenging alpine terrain and seeking extended trail adventures. Its key benefit is the powerful Bosch motor paired with a massive 800Wh battery, offering exceptional range and assistance on steep climbs. A potential caveat for some might be its trail-focused geometry, which could feel less nimble for casual urban riding.

All features

Model Part Number5342362
BrandTrek

Extended Product Information

FAQs

What is the expected range of the 800Wh battery?

The range varies significantly based on factors like rider weight, terrain, assist level, tire pressure, and wind. However, the 800Wh battery is designed to offer substantially longer rides than standard capacity batteries, often enabling rides of 50+ miles under typical trail conditions.

Can I remove the battery for charging?

Yes, the Powerfly FS+ 4 features Trek's Removable Integrated Battery (RIB 2.0) system, allowing you to easily remove the battery for charging indoors or for storage.

What type of terrain is this bike best suited for?

This bike is specifically designed for rugged, full-power mountain biking on tough alpine terrain and long-distance trail rides. Its full suspension and robust build make it ideal for technical descents, steep climbs, and varied trail conditions.

Does the bike come with pedals?

Typically, electric mountain bikes like this do not come with pedals as standard, allowing riders to choose their preferred type. Please check with your retailer for specifics.

How do I maintain the Bosch motor system?

The Bosch motor system is low maintenance. Keep the motor area clean and free of excessive dirt or debris. Ensure software updates are applied when available via a Bosch dealer. Avoid pressure washing directly onto the motor.

What is the warranty on the bike and battery?

Trek typically offers a limited lifetime warranty on the frame and a one-year warranty on components, including the battery and motor system, against manufacturing defects. It's best to consult the official Trek warranty documentation for precise details.

Can I use this bike for commuting?

Yes, the Powerfly FS+ 4 800Wh is equipped with practical accessories like mudguards, lights, and a rear rack, making it a capable option for commuting as well as trail riding.

Troubleshooting

Motor not providing assistance.

Check that the battery is properly seated and charged. Ensure the display is turned on and that the speed sensor is correctly aligned and functioning. Verify that the bike's system is not in 'walk mode' or an 'off' state.

Gears are not shifting smoothly.

Inspect the derailleur for any visible damage. Check the gear cable tension; it may need adjustment. Ensure the chain and cassette are clean and lubricated. The B-tension screw on the rear derailleur might require adjustment.

Brakes feel weak or spongy.

Check the brake pad wear and clean the rotors. Ensure there are no air bubbles in the hydraulic system; bleeding the brakes may be necessary if the issue persists. Verify that the brake levers are not bent or damaged.

Battery not charging.

Confirm the charger is plugged in and receiving power. Ensure the battery contacts on both the battery and the bike are clean. Try a different power outlet. If the issue continues, the battery or charger may need servicing.

Suspension feels stiff or unresponsive.

For the air fork, verify the air pressure is set according to your weight and riding style. Check for any obstructions or dirt around the fork stanchions or rear shock. Ensure the suspension lockout is disengaged.

Pros and Cons

Pros

  • Extended range thanks to the 800Wh battery, perfect for long rides.
  • Powerful Bosch motor provides ample support for challenging climbs.
  • Full suspension (130mm front, 120mm rear) offers excellent comfort and control on rough terrain.
  • Integrated accessories add significant utility for commuting and touring.
  • Durable Alpha Platinum Aluminium frame built to withstand rigorous use.
  • Trail-ready geometry for confident handling on technical descents.

Cons

  • The trail-focused geometry might feel less agile for purely urban or recreational riding.
  • Hydraulic disc brakes are reliable but might be less premium than higher-end models.
  • The 10-speed drivetrain, while functional, may not offer the widest gear range compared to 11 or 12-speed systems.
  • Heavier weight due to the large battery and full suspension system.
  • SR Suntour XCR 34 fork, while capable, is an entry-level air fork.

Setup, Compatibility & Care

Initial Setup: Upon receiving the bike, it's recommended to have it assembled and checked by a qualified bicycle mechanic. Ensure all bolts are torqued to specification, especially on the stem, handlebars, and suspension components. Familiarize yourself with the Bosch Purion 200 display and its controls for managing motor assistance and viewing ride data.

Battery Care: The 800Wh Bosch PowerTube battery can be charged on or off the bike. For optimal battery longevity, avoid storing it for extended periods in extreme temperatures (hot or cold) and aim to keep the charge level between 20% and 80% when not in use for long durations. Always use the official Bosch charger.

Drivetrain Maintenance: The Shimano CUES U6000 drivetrain with LINKGLIDE technology is designed for durability. Regularly clean the chain, cassette, and chainrings. Lubricate the chain after cleaning and whenever it appears dry. Adjustments to the derailleur may be needed periodically to ensure smooth shifting.

Brake Care: Keep the Tektro HD-M275 hydraulic disc brake rotors and pads clean. Avoid contact with oily substances, as this can contaminate the pads and reduce braking performance. Inspect brake pads for wear regularly and replace them as needed.

Suspension Care: Clean the fork stanchions and rear shock after muddy rides to prevent dirt from damaging seals. Refer to the SR Suntour and RockShox documentation for specific maintenance intervals and procedures, including air pressure adjustments for the SR Suntour XCR 34 air fork.

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