The Powerfly FS+ 8 is a deluxe full-power, full suspension electric mountain bike ready for adventure. Its sturdy Alpha Platinum Aluminium frame partners with a Fox suspension fork and shock (120 mm rear, 130 mm front) to smooth out rough trails, while a 12-speed wireless SRAM GX Eagle AXS transmission keeps shifting ultra-smooth through even the roughest terrain. 4-piston SRAM DB 8 hydraulic disc brakes provide stop-on-a-dime control for loose, wet and steep trails.
You want to explore without limits and you want a powerful e-bike to take you everywhere. You're looking for full assist to flatten long, punchy climbs and just enough trail-smoothing suspension to deliver confident handling in the rough. You want upgrades where they matter, like the clean, wireless shifts of a SRAM AXS T-Type transmission. You want to explore without limits and you want a powerful e-bike to take you everywhere. You're looking for full assist to flatten long, punchy climbs,
An Alpha Platinum Aluminium frame with a Bosch Performance Line CX motor (85 Nm, 250W), a huge 800 Wh PowerTube RIB 2.0 removable integrated battery, and Purion 200 controller. 130 mm front and 120 mm rear suspension from a FOX Rhythm 36 fork and a FOX Float Rhythm shock. Tubeless-ready wheels with puncture-resistant 2.4? tyres, a 12-speed wireless SRAM GX Eagle AXS T-Type transmission for clean shifts, a Bontrager Line dropper post and hydraulic disc brakes. An Alpha Platinum Aluminum frame with a Bosch Performance Line CX motor (85Nm, 250W), a huge 800Wh PowerTube RIB 2.0 removable integrated battery, and Purion 200 controller
The Powerfly FS+ 8 is an electric mountain bike built for discovering what's beyond the next climb. It features just enough trail-smoothing suspension to boost comfort and confidence, and plenty of power to get you wherever you want to explore. Powerfly FS+ 8 is an electric mountain bike built for discovering what's beyond the next climb. It features just enough trail-smoothing suspension to boost comfort and confidence
- The Powerfly FS+ gives you the powerful boost you crave on high alpine climbs, confident comfort on descents and a big battery for getting far out there Powerfly FS+ gives you the powerful boost you crave on high alpine climbs, confident comfort on descents, and a big battery for getti
- Bosch's Performance Line CX motor delivers plenty of torque for steep, punchy climbs and is easy to control with the Purion 200 remote - plus you can customise it in the eBike Flow app Bosch's Performance Line CX motor delivers plenty of torque for s
- Its RIB 2.0 removable integrated battery is easy to remove for travel and storage, and its virtually rattle-free while you ride Its RIB 2.0 removable integrated battery is easy to remove for travel and storage, and virtually rattle-free while you rid
- Want even more boost? With the Bosch e-Bike Flow app, you can increase torque to 100 Nm and peak power up to 750W. Want even more boost? With the Bosch e-Bike Flow app, you can increase torque to 100Nm and peak power up to 750W.
- It's compatible with Bosch PowerMore booster batteries, and you can even upgrade the 600 Wh battery for a bigger 800 Wh option to get way out there. Both parts can be retrofitted by the dealer It's compatible with Bosch PowerMore booster batteries, a
New RIB 2.0
Removable Integrated Battery (RIB 2.0) makes it easy to remove your battery for more convenient charging or travelling, and you don't have to worry about dropping it thanks to a secondary safety catch.
Extend your ride
Wanna take your ride even further? Pair a 250 Wh PowerMore range extender with your bike to chase your most epic adventures.
Light, quiet, powerful: 100 Nm upgrade ready
Bosch's Performance Line CX motor has 85 Nm of torque out of the box but can be tuned all the way up to 100 Nm and 750 W of power using the Bosch eBike Flow app, the all-new Bosch CX motor is lighter, quieter and now more powerful than ever without wavering on natural-feeling support for crushing epic rides.
Light, quiet, powerful: 120 Nm upgrade ready
Bosch's Performance Line CX motor has 85 Nm of torque out of the box but can be tuned all the way up to 120 Nm and 750 W of power using the Bosch eBike Flow app, the all-new Bosch CX motor is lighter, quieter and now more powerful than ever without wavering on natural-feeling support for crushing epic rides.
Massive range for epic rides
Bosch's new 800 Wh battery gives you enormous range for chasing down your greatest adventures - or you can swap to a 600 Wh option for a lighter-weight ride with more nimble handling.
Customise your ride
Get more utility and sleek integration with mudguards and a rack designed specifically for Powerfly, so you can customise your setup for everyday needs or epic exploration.
0% APR Finance with Just a 10% Deposit
Looking to spread the cost of your new road, mountain, electric or commuter bike?
We’ve partnered with Novuna Personal Finance to offer flexible payment options both online and in-store.
✔ 0% APR available over 6, 12, 18 or 24 months
✔ Interest-bearing finance available over 12, 24, 36 or 48 months
✔ Only 10% deposit required
✔ Minimum spend £675
Finance makes it easier to get the bike you want — without the upfront hit.
Please note: 0% finance may not be available on selected discounted products.
Finance Options at a Glance
Term (Months)
APR
Deposit
6, 12, 18, 24
0%
10%
12, 24, 36, 48
15.9% Representative
10%
Credit subject to status and affordability. Terms & Conditions apply.
Finance is provided by Novuna Personal Finance, a trading style of Mitsubishi HC Capital UK PLC, authorised and regulated by the Financial Conduct Authority (FRN 704348).
The Financial Services Register can be accessed at www.fca.org.uk.
With 0% finance, you pay no interest — just the bike, split into manageable payments.
How to Apply
Online:
Add your items to the basket, select the finance option at checkout, and complete the secure online application.
In-store:
Let one of our team know you’d like to pay by finance and we’ll guide you through the process.
Applications usually take just a few minutes, and you’ll often receive a decision quickly.
Once approved, you can e-sign your agreement or print and return it. Goods are dispatched once your signed agreement has been received and processed.
Finance FAQ
Who can apply?
You must:
Be 18 or over
Be a UK resident (minimum 12 months)
Work at least 16 hours per week, or be retired with an income
Have a UK bank account
Unfortunately, finance is not available to residents of the Republic of Ireland.
When do repayments start?
Your first repayment will be taken approximately one month after your purchase has been delivered.
Are there any hidden fees?
No. There are no arrangement fees or hidden extras.
What happens if my application is declined?
Applications are assessed using credit scoring and checks with credit reference agencies. If declined, you may reapply after 6 months, as circumstances can change.
Need Help?
If you have any questions about finance, call us on 01363 774773 and our team will be happy to help.
Here at the Bike Shed we always strive to offer value for money and offer friendly expert advice on the best quality products we can source.
We are great supporters of shopping locally due to the benefits it has on our local economy, employment, and community. However, we do not want to see you disadvantaged by choosing to shop with us and we, therefore, will match any UK based competitors’ prices on the following conditions:
• The product must be available with the UK supplier even if discontinued or an older model.
• If assembly is required there may be an additional charge for this. Please note: If the Bike Shed assembles your bike not only will your warranty be more robust you also qualify for a free first service with us.
• We reserve the right to contact the seller to verify the price/availability/accuracy etc.
• Used, ex-demo, ex-display, returns, and all online auction sites do not qualify.
Where the item does not match the above, we still attempt to be competitive in terms of price, quality, and service.
We reserve the right to decline the price promise at our own discretion
Buy a bike from the Bike Shed and your first service is on us!
Simply arrange a convenient time with your local store and our bike mechanics will give your bike a thorough check and tune up to ensure you're riding as smoothly and efficiently as possible.
Your free service needs to be taken between approximately 6 weeks and a maximum of 3 months from the date of purchase.
Please note: To qualify for the free service you are responsible for bringing your bike into a store. Unfortunately collections are not possible.
Looking for a more comprehensive service? Check out our workshop page for more details
Frame
Size L, 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, 130mm travel Fox Rhythm 36, Float EVOL air spring, GRIP damper, tapered steerer, 44mm offset, Boost110,
Wheel Size
Front 29 / Rear 29
Wheels
Bontrager Line Comp 30, Tubeless Ready, 6-bolt, Boost110, 15 mm thru axle, 29"
Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-bolt, Boost148, 12mm thru axle, 29''
Our size guides are a helpful starting point, but they’re only a guide. For complete confidence, check the brand’s sizing advice or pop into one of our stores — because nothing beats sitting on your new bike to make sure it feels spot on.
Trek Road Bikes
Madone, Emonda, Domane, Silque, Lexa, Boone, 1 Series
The easiest way to determine your frame size is by height, but many riders find that they are between sizes. Choosing to go up or down a size depends on your personal riding style and body proportions.
A bike with a longer reach will have a longer wheelbase. That makes it more stable, especially on high-speed descents. That’s great for riders who like to plough through rather than pop over rough stuff on the trail. If you have a relatively long torso or arms for your height, you may find that a longer reach gives you a roomier, more comfortable cockpit.
A bike with a shorter reach will have a shorter wheelbase. It’s not as stable, but it’s more nimble and easier to flick around. That’s great for riders with a more playful, active riding style who like to get off the ground and whip their wheels around. If you have a relatively short torso or arms for your height, you may find that a shorter reach makes it easier for you to hold the handlebars comfortably.
Effective top tube
Effective top tube is the horizontal distance from the centre of the head tube to the centre of the seat post. This measurement represents how a mountain bike fits while you’re sitting on the saddle. It’s important for cross country riders, who prioritise pedalling power.
Reach
Reach is the horizontal distance from the centre of the head tube to a vertical line that runs through the centre of the bottom bracket shell. This measurement represents how a mountain bike fits when you’re standing up on the pedals, like when you’re descending. Since most trail riders prioritise out-of-the-saddle riding, this tends to be the most helpful metric when comparing bike sizes from different brands.
General Size Guide
Our size guides are a helpful starting point, but they’re only a guide. For complete confidence, check the brand’s sizing advice or pop into one of our stores — because nothing beats sitting on your new bike to make sure it feels spot on.
General Bike Size Guide
Choosing the right bike size makes a huge difference to comfort, control and efficiency. Use the guide below to find the ideal frame size for your height and inside leg measurement.
What You Need
Your Height
Stand with your back against a wall, shoes off, feet together. Mark the wall above your head with a pencil, then measure from the floor to the mark.
Your Inside Leg Length
Stand with your back against a wall, shoes off. Place a book or ruler between your legs (as if sitting on a saddle) and measure from the floor to the top of the book/ruler. Having someone assist makes this easier.
Remember: This guide provides general sizing only. Different brands may vary. If you’re unsure, speak to the Bike Shed team on 01363 774773 or send us a message — we’re always happy to help.
Mountain Bike Sizing (Men)
Height
Inside Leg
Recommended Size
147–152cm / 4'10"–5'0"
66cm / 26"
13” (X Small)
152–160cm / 5'0"–5'3"
69cm / 27"
13”, 14” (X Small)
160–170cm / 5'3"–5'7"
71cm / 28"
15”, 16" (Small)
170–175cm / 5'7"–5'9"
76cm / 30"
17", 18” (Medium)
175–180cm / 5'9"–5'11"
79cm / 31"
18”, 19" (Medium, Large)
180–188cm / 5'11"–6'2"
81cm / 32"
19", 20” (Large)
188–196cm / 6'2"–6'5"
86cm / 34"
20", 21”, 22” (Large, X Large)
196cm+ / 6'5"+
91cm / 36"
23", 24” (XX Large)
Mountain Bike Sizing (Women)
Height
Inside Leg
Recommended Size
147–155cm / 4'10"–5'1"
66cm / 26"
13”, 14" (X Small)
155–160cm / 5'1"–5'3"
69cm / 27"
13”, 14” (X Small)
160–165cm / 5'3"–5'5"
71cm / 28"
15”, 16" (Small)
165–172cm / 5'5"–5'8"
76cm / 30"
17", 18” (Medium)
172cm+ / 5'8"+
79cm / 31"
19" (Large)
Road Bike Sizing (Men)
Height
Inside Leg
Recommended Size
147–152cm / 4'10"–5'0"
66cm / 26"
47–48cm (XX Small)
152–160cm / 5'0"–5'3"
69cm / 27"
49–50cm (X Small)
160–170cm / 5'3"–5'7"
71cm / 28"
51–53cm (Small)
170–175cm / 5'7"–5'9"
76cm / 30"
54–55cm (Medium)
175–180cm / 5'9"–5'11"
79cm / 31"
56–58cm (Large)
180–188cm / 5'11"–6'2"
81cm / 32"
59–60cm (X Large)
188–196cm / 6'2"–6'5"
86cm / 34"
60–62cm (X Large, XX Large)
196cm+ / 6'5"+
91cm / 36"
62–63cm (XX Large)
Road Bike Sizing (Women)
Height
Inside Leg
Recommended Size
147–155cm / 4'10"–5'1"
66cm / 26"
44–46cm (XX Small)
155–160cm / 5'1"–5'3"
69cm / 27"
47–49cm (X Small)
160–165cm / 5'3"–5'5"
71cm / 28"
50–52cm (Small)
165–172cm / 5'5"–5'8"
76cm / 30"
53–55cm (Medium)
172cm+ / 5'8"+
79cm / 31"
56–57cm (Large)
Hybrid Bike Sizing (Men)
Height
Inside Leg
Recommended Size
147–152cm / 4'10"–5'0"
66cm / 26"
13”, 14" (X Small)
152–160cm / 5'0"–5'3"
69cm / 27"
14”, 15” (X Small, Small)
160–170cm / 5'3"–5'7"
71cm / 28"
15”, 16" (Small)
170–175cm / 5'7"–5'9"
76cm / 30"
17", 18” (Medium)
175–180cm / 5'9"–5'11"
79cm / 31"
19”, 20" (Large)
180–188cm / 5'11"–6'2"
81cm / 32"
20", 21” (Large, X Large)
188–196cm / 6'2"–6'5"
86cm / 34"
21”, 22” (Large, X Large)
196cm+ / 6'5"+
91cm / 36"
23", 24” (XX Large)
Hybrid Bike Sizing (Women)
Height
Inside Leg
Recommended Size
147–155cm / 4'10"–5'1"
66cm / 26"
13”, 14" (X Small)
155–160cm / 5'1"–5'3"
69cm / 27"
14”, 15” (X Small, Small)
160–165cm / 5'3"–5'5"
71cm / 28"
15”, 16" (Small)
165–172cm / 5'5"–5'8"
76cm / 30"
17", 18” (Medium)
172cm+ / 5'8"+
79cm / 31"
19" (Large)
Special Order Enquiry 2026 Powerfly FS+ 8 Gen 4
Calculate finance options...
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£2940
£600 (10%)
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Total cost on finance:
£0.00
with a £ 0.00
deposit.
The total charge for credit is £ 0.00.
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WANT TO APPLY? To apply, add the item to your basket and apply for
finance on your entire basket.
Please note the above quotation is an indicative cost and actual monthly payments may vary by
+/- 2p per month.
Credit subject to status and affordability. Terms & Conditions Apply. Bike Shed is a credit broker and is Authorised and Regulated by the Financial Conduct Authority.
Credit is provided by Novuna Personal Finance, a trading style of
Mitsubishi HC Capital UK PLC, authorised and regulated by the
Financial Conduct Authority. Financial Services Register no.
704348. The register can be accessed through http://www.fca.org.uk.
24 Month Representative Example:
Purchase Price (incl. VAT) £750
Deposit £75
Loan Amount £675
Interest/Total Charge for Credit £109.32
Total Amount Repayable £859.32
Balance Payable £784.32
By 24 Monthly Repayments of £32.68
15.9% APR Representative
Bank rate of interest 8.1% PA fixed
Please note the above quotation is an indicative cost and actual monthly payments may vary.
For Buy Now Pay Later and Deferred Interest Bearing Credit: Interest is charged from day 1 of your agreement, but not charged on any repayments made during the deferral period. On expiry of the deferral period, interest accrued during the deferral period will be applied to your repayments.
Consumer credit services are only available to over 18s and
subject
to status.
This is for estimation purposes only. Actual Finance Application
is
Completed During Checkout.
