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If you're obsessed with XC, the all-new F-Si is the bike for you. Built to climb faster, descend harder, and sprint better than any other hardtail out there, it's serious XC goodness for those with serious XC issues.


2019 Cannondale F-Si LTD Mens Carbon Hardtail Mountain Bike in Black

  • €6,408.88
£5,779.00 £6,799.99
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in Customer Rewards when you buy this item today
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When you buy the 2019 Cannondale F-Si LTD Mens Carbon Hardtail Mountain Bike in Black, you will earn of rewards points to spend on your next purchase from us, anything online and instore.

Hassle free returns

At Hargroves Cycles our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 90 day online return policy* in which you can receive a full refund. Any item including bikes (but with the exception of food) can be returned to us for any reason provided it is received by us in an unused condition in or with its original packaging.

Small Items - Parts & Accessories

Include the returns form and send it to us with the delivery company of your choosing - easy peasy!

Larger Items - Bikes / Bulky Items

If you wish to return bikes or bulky items such as forks or turbo trainers please contact our Returns Department to arrange a special courier collection. Contact us on our email address We can arrange collection for you from your home or work address, using our couriers ( You may be required to cover postages costs )

* Bulky Items Include - Bikes - Wheels/wheelsets - Turbo Trainers - Framesets - Forks - Groupsets - Car racks - Child Seats

Warranty Claims

Please contact us prior to returning so we can ensure the fastest suitable resolution for you:


2019 Cannondale F-Si LTD Mens Carbon Hardtail Mountain Bike in Black

Season : 2019

Brand : Cannondale

Code : C25139MMATBLK

Weight : 15KG

The Cannondale F-Si HM Mountain Bike is light and agile yet stable, able to climb, descend and navigate fast technical singletrack with equal aplomb. The limited-edition colourway offers a sleek and stealthy aesthetic, and at the core is the BallisTec Hi-MOD carbon frame that's lightweight and durable. It's paired with a Lefty Ocho Carbon 100mm travel fork, and together they ensure a responsive, agile ride with bump-smoothing suspension. Further contributing to a comfortable ride are the SAVE Micro-suspension flex zones that will absorb shock and, consequently, minimise fatigue.

OutFront Steering Geometry is another key aspect, bringing stability when required but keeping the feel nimble and fast. An Ai (Asymmetric Integration) offset drivetrain with shorter chainstays not only improves traction but keeps clearance high for both wide tyres and mud.
Shimano's XTR components take care of both shifting and braking, with the 1x12-speed drivetrain giving you a gear for every scenario - be that when climbing, descending or sprinting. Hydraulic brakes are confidence-inspiring in their power and modulation, no matter if it's dry and dusty or wet and muddy. Within the 29" wheels there's a Cannondale Wheel Sensor that records your ride data with incredible accuracy. Link it to the Cannondale App to sync rides, view stats and gain access to other information.

Key Features:
  • BallisTec Hi-MOD carbon: Cannondale's premium high-strength, high-stiffness carbon construction. An advanced blend of intermediate, high, and ultra-high-modulus fibres yields a frame that’s extremely light, durable, and lively
  • SAVE Micro-suspension: Flex zones and directional carbon layup allow the rear triangle and seat tube to absorb shock for better traction, higher speeds and minimised fatigue, whether seated or standing
  • Speed release thru-axles: The slotted dropout design lets the axle stay in the hub for quicker, easier wheel changes. Compatible with standard 148x12 thru-axle hubs
  • Proprietary Ai (Asymmetric Integration) offset drivetrain delivers super short chainstays for climb-winning traction and agile handling, without sacrificing mud/tyre clearance or limiting you to single ring set-ups
  • Confidently stable on hectic descents, yet quick and nimble everywhere else - OutFront Steering Geometry gives you the best of both worlds
  • Cannondale Wheel Sensor: Delivers accurate speed, route and distance info, registers your bike, reminds you of needed service and more, all through the free Cannondale App
  • Shimano XTR drivetrain and hydraulic disc brakes
  • €6,408.88
  • $6,317.96
  • $8,772.65
  • kr65,943.56
  • kr57,258.68
  • kr47,744.84
  • $9,488.60
  • ¥667,438.89
Delivery Informationa

All parts and accessories orders over £40 to Mainland UK addresses will be dispatched FREE via a tracked 48hr service (orders under £40 will incur a £4.50 delivery charge).

Bikes over £350 are dispatched FREE via TNT with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).

*Bikes with a value of under £350 will incur a delivery charge of £15

Cycle To Worka

Spread the cost of your new bike, helmet, safety equipment and accessories paying via instalments being taken directly from your wage. The payments for the Cycle To Work scheme are taken out of your gross wage and your Tax & NI contributions are then worked out based on your new lower gross wage which is how you save money on your new bike and equipment.

At the end of the time period specified with your Cycle To Work scheme you then have the option of buying your bike or to continuing to use it while you work for the company. If you decide to purchase the bike, the balance you owe will be based on a percentage of how much the bike was worth at the time you took out the Cycle To Work scheme.

Find out more

What's In The Box?a

We know how eager you'll be to jump on your new bike and hit the dirt or tarmac, so we give you everything you need to get you set up quickly. For full instructions on how you're bike will arrive and what you'll need to do, visit our How Our Bikes Are Built page

Easy Set-Up Instructions
Have your brand spanking new bike ready to ride in less than 15 minutes with our easy to follow guide.

Free Multi-Tool
9 in 1 multi-tool to help you set up and maintain your bike.

Free Pedal Spanner
Attach your pedals with ease using our free tool. Please note pedals are not included with all bikes so please check the specification. You can shop our awesome range of pedals HERE

Special Offer

30% Off Selected Pedals With All Bikes

Get 30% off a select range of pedals when you purchase a bike from Hargroves Cycles. Once you add the bike to cart you will be taken the pedal selection page to add your half-price pedals, discount will be applied at the checkout.

Find Out More
Technical Information

Frame: Cannondale all-new, F-Si, BallisTec Carbon, SAVE, PF30A, tapered head tube, Speed Release 12mm thru-axle, Ai Offset

Fork: Cannondale all-new Lefty Ocho Carbon, 29", 100mm, Chamber Damper with cable lockout, OppO Spring System, tapered steerer, 55mm offset

Headset: Integrated, 1-1/8 to 1.5", sealed angular contact bearings (Integrated steer stop size small only)

Bottom Bracket: Cannondale Alloy PressFit30

Stem: Cannondale C1, 7075 Alloy, 1-1/8", 31.8, 7°

Handlebar: Cannondale C1 Flat, Carbon, 8-degree sweep, 760mm

Grips: Cannondale Locking Grips

Front Brake: Shimano XTR Race, hydraulic disc 160mm Ice Tech rotor

Rear Brake: Shimano XTR Race, hydraulic disc 160mm Ice Tech rotor

Brake Levers: Shimano XTR Race hydraulic disc, carbon lever

Front Derailleur: N/A

Rear Derailleur: Shimano XTR, Shadow Plus, 12-speed

Shift Levers: Shimano XTR, 12-speed

Cassette: Shimano XTR, 10-51, 12-speed

Crankset: Cannondale HollowGram Si, BB30 w/X-Sync© SpideRing, 34T

Chain: Shimano XTR, 12-speed

Front Wheel: Cannondale Lefty 60 hub / Stan's NoTubes Crest S1, 32h, tubeless-ready rim / HollowGram, double-butted straight pull spokes

Rear Wheel: Cannondale HollowGram 148x12 hub with DT Swiss internals / Stan's NoTubes Crest S1, 32h, tubeless-ready rim / HollowGram, double-butted straight pull (Ai Offset dish) spokes

Front Tyre: Schwalbe Racing Ray 29 x 2.25", tubeless-ready clincher

Rear Tyre: Schwalbe Racing Ralph 2.25", Snake Skin, Addix Speedgrip compound, tubeless-ready clincher

Saddle: Fabric Scoop Flat Race, titanium rails

Seatpost: Cannondale C1 full carbon, 27.2 x 350/400mm

Sizing Information
Mountain Bike S M L XL
Inches 5'0" - 5'4" 5'4" - 5'7" 5'7" - 5'11" 5'11" - 6'3"
Cm 152 - 165 162 - 170 170 - 180 180 - 190
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Home Mountain Biking Bikes Cannondale Mountain Bikes

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

You Pre-Order is prioritised (at no additional charge); meaning that, as soon as the product arrives with us, we can wrap it straight back up and get it sent out to you - it often never even hits the stock room shelves!


With Pre-Launch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Pre-Orders.

So, instead, you can submit your email address against the item you are interested in and we will email you as soon as stock arrives on the system.

Estimated Delivery Dates

Estimated Delivery Dates are given on Pre-Order and Pre-Launch products. They are for indication purposes only and can change at any time without notice.

The dates we provide are based on indications given by our suppliers. Whenever we get updated information from our suppliers we will endeavour to update the Estimated Delivery Dates provided on product pages.