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TREK FX SPORT SL 4 HYBRID BIKE 2027 MATTE DEEP SMOKE

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FX Sport SL 4 is a carbon fibre fitness bike for riders who want the speed of a lightweight road bike with the comfort and control of a flat handlebar.

The 1x drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides. Fitted with 28.0" wheels and engineered for responsive handling, the FX Sport SL 4 delivers the agility you need on varied terrain whilst maintaining the efficiency of a road-focused design. Whether you're building fitness or joining the pack, this versatile machine combines lightweight performance with everyday practicality.


Features

  • Lightweight Carbon Performance: Carbon fork and lightweight construction deliver responsive handling, comfort and efficient power transfer.
  • Simple Wide-Range Drivetrain: Shimano CUES 1x10-speed drivetrain provides smooth, reliable shifting with a broad gear range and minimal maintenance.
  • Fast Yet Comfortable: Tubeless Ready Bontrager wheels, wide 700x40c tyres and ergonomic finishing kit inspire confidence on roads and cycle paths alike.

Full Specification:

  • Frame: Trek FX Sport SL carbon frame
  • Fork: Carbon, hidden mudguard mounts, flat mount disc, 5x100mm thru-skew
  • Shifters: Shimano CUES U6000 with optical gear display, 10-speed
  • Crankset: Prowheel alloy
  • Cassette: Shimano CUES LG300 LINKGLIDE, 11-48T, 10-speed
  • Chain: Shimano LG500 9/10/11-speed or KMC X Glide 11-speed
  • Front Derailleur: None (1x drivetrain)
  • Rear Derailleur: Shimano CUES U6000 GS
  • Bottom Bracket: Not specified
  • Pedals: Bontrager City pedals
  • Rims: Bontrager Paradigm Tubeless Ready, 32-hole, 21mm internal width, Presta valve
  • Front Hub: Formula CL-51 alloy, 100x5mm
  • Rear Hub: Formula CL-52 alloy, 135x5mm
  • Tyres: Bontrager GR1 Expert Hard-Case Lite, wire bead, 60 TPI, 700x40mm
  • Brakes: Flat mount hydraulic disc brakes, 160mm maximum rotor size front and rear
  • Handlebars: Bontrager alloy, 31.8mm clamp, 15mm rise; 600mm width (XS-S), 660mm width (M-XL)
  • Handlebar Grips: Trek ergonomic PRO lock-on grips
  • Stem: Bontrager Elite, Blendr-compatible, 31.8mm clamp, 7° rise; 90mm (XS), 100mm (S-M), 110mm (L-XL)
  • Saddle: Bontrager Commuter Comp
  • Seatpost: Bontrager alloy, 27.2mm, 12mm offset, 330mm length
  • Accessories: Hidden mudguard mounts, Blendr-compatible stem, Tubeless Ready rims
  • Weight: 10.90kg (Medium)
TREK FX SPORT SL 4 HYBRID BIKE 2027 MATTE DEEP SMOKE
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  • SKU: 5348100
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Product Description

FX Sport SL 4 is a carbon fibre fitness bike for riders who want the speed of a lightweight road bike with the comfort and control of a flat handlebar.

The 1x drivetrain simplifies shifting without sacrificing gear range, making this high-performance bike perfect for everything from solo workouts to speedy group rides. Fitted with 28.0" wheels and engineered for responsive handling, the FX Sport SL 4 delivers the agility you need on varied terrain whilst maintaining the efficiency of a road-focused design. Whether you're building fitness or joining the pack, this versatile machine combines lightweight performance with everyday practicality.


Features

  • Lightweight Carbon Performance: Carbon fork and lightweight construction deliver responsive handling, comfort and efficient power transfer.
  • Simple Wide-Range Drivetrain: Shimano CUES 1x10-speed drivetrain provides smooth, reliable shifting with a broad gear range and minimal maintenance.
  • Fast Yet Comfortable: Tubeless Ready Bontrager wheels, wide 700x40c tyres and ergonomic finishing kit inspire confidence on roads and cycle paths alike.

Full Specification:

  • Frame: Trek FX Sport SL carbon frame
  • Fork: Carbon, hidden mudguard mounts, flat mount disc, 5x100mm thru-skew
  • Shifters: Shimano CUES U6000 with optical gear display, 10-speed
  • Crankset: Prowheel alloy
  • Cassette: Shimano CUES LG300 LINKGLIDE, 11-48T, 10-speed
  • Chain: Shimano LG500 9/10/11-speed or KMC X Glide 11-speed
  • Front Derailleur: None (1x drivetrain)
  • Rear Derailleur: Shimano CUES U6000 GS
  • Bottom Bracket: Not specified
  • Pedals: Bontrager City pedals
  • Rims: Bontrager Paradigm Tubeless Ready, 32-hole, 21mm internal width, Presta valve
  • Front Hub: Formula CL-51 alloy, 100x5mm
  • Rear Hub: Formula CL-52 alloy, 135x5mm
  • Tyres: Bontrager GR1 Expert Hard-Case Lite, wire bead, 60 TPI, 700x40mm
  • Brakes: Flat mount hydraulic disc brakes, 160mm maximum rotor size front and rear
  • Handlebars: Bontrager alloy, 31.8mm clamp, 15mm rise; 600mm width (XS-S), 660mm width (M-XL)
  • Handlebar Grips: Trek ergonomic PRO lock-on grips
  • Stem: Bontrager Elite, Blendr-compatible, 31.8mm clamp, 7° rise; 90mm (XS), 100mm (S-M), 110mm (L-XL)
  • Saddle: Bontrager Commuter Comp
  • Seatpost: Bontrager alloy, 27.2mm, 12mm offset, 330mm length
  • Accessories: Hidden mudguard mounts, Blendr-compatible stem, Tubeless Ready rims
  • Weight: 10.90kg (Medium)

What wheel size does the Trek FX Sport SL 4 2027 - Matte Deep Smoke use?

The Trek FX Sport SL 4 2027 - Matte Deep Smoke uses 28.0" wheels.

Does the Trek FX Sport SL 4 2027 - Matte Deep Smoke have a 1x drivetrain?

Yes. The Trek FX Sport SL 4 2027 - Matte Deep Smoke is specified with a 1x drivetrain for simpler shifting and fewer components.

Is the Trek FX Sport SL 4 2027 - Matte Deep Smoke a carbon fibre frame?

Yes. The Trek FX Sport SL 4 2027 - Matte Deep Smoke is a carbon fibre fitness bike designed for lightweight performance.

Is the Trek FX Sport SL 4 2027 - Matte Deep Smoke an e-bike with a motor or battery?

No. The specification and marketing information for the Trek FX Sport SL 4 2027 - Matte Deep Smoke do not indicate any motor or battery; it is not an e-bike.

At All Terrain Cycles, we want you to ride with confidence every time. To ensure your bike or e-bike stays in peak condition, here are some essential safety and maintenance tips.

Bicycle Safety 

Always wear a helmet – Safeguard against head injuries by using a properly fitted, safety-certified helmet.

Perform pre-ride checks – Before each ride, verify that brakes, tyres, and gears are in good working order.

Stay visible – Utilise lights and reflective gear when cycling in low-light conditions.

Follow road rules – Ride responsibly and remain aware of your surroundings.

Aftercare for Your New Bike Initial Check-Up (First 50-100 miles)

Gear Adjustment – New cables may stretch slightly; have a qualified mechanic check and adjust them.

Brake & Wheel Check – Inspect brakes for wear and ensure wheels are aligned properly.

Lubrication – Apply chain oil and check bolt tightness to maintain smooth performance.

Tyre Pressure – Regularly monitor to prevent flats and enhance efficiency.

Pedals - Ensure pedals are still tight and correctly fitted.

Routine Maintenance (Every Few Weeks)

Chain Care – Clean and lubricate your chain to minimise wear and prolong its life.

Brake Safety – Check brake pads and responsiveness before each ride.

Tyre Inspection – Look for punctures and ensure correct air pressure.

Handlebar & Stem Alignment – Confirm they are tight and secure to prevent instability.

Frame Safety Check – Look for any signs of damage or cracks.

Pedals - Ensure pedals are still tight and correctly fitted.

Professional Check-Ups

Have your bike serviced at least once a year, or more frequently if you ride often.

Aftercare for Your New Electric Bicycle (e-Bike) Initial Check-Up (First 50-100 miles)

Battery Care – Fully charge your battery (if required) before the first ride and store it in a dry, moderate-temperature environment.

Avoid Overcharging – Unplug the charger once fully charged to extend battery life.

Pedals - Ensure pedals are still tight and correctly fitted.

Routine e-Bike Maintenance (Every Few Weeks)

Motor Inspection – Listen for unusual noises and ensure smooth operation.

Battery & Connection Checks – Inspect cables and connectors for dirt, moisture, or damage.

Pedals - Ensure pedals are still tight and correctly fitted.

Seasonal e-Bike Maintenance

Check Electrical Components – Ensure wires and connections are clean and secure.

Professional Servicing – Have your e-bike inspected at least once a year or every 500-1000 miles for optimal performance.

By following these aftercare guidelines, you’ll help ensure that your bicycle runs smoothly, lasts longer, and remains a joy to ride. Stay safe and enjoy the ride!

Read our full advice

If you have any problems or concerns: Contact All Terrain Customer Services on 01274 588488 or email sales@allterraincycles.co.uk

 

SHIPPING COSTS

 

UK Delivery Information

Standard Delivery (Non-Bike Orders)

  • £5.99 flat rate for all non-bike orders

  • FREE delivery on orders over £999

Standard Delivery Bike Orders – UK Mainland

  • Bikes under £999: £12.99 delivery fee

  • Bikes over £999: FREE delivery

Highlands of Scotland 

Bike & E-bikes -  £46.99

Isle of Wight

Bike & E-bikes - £46.99

Industrial Scotland

Bike & E-bikes - £22.99

Grampian Region

Bike & E-bikes - £36.99

Scottish Offshores

Bike & E-bikes - £96.99

Northern Ireland

Bike & E-bikes - £111.99

Channel Islands

Bikes - £149.99

E-bikes - £199.99

Accessoires - £49.99

Isle of Man

Bike & E-bikes - £96.99

HIGHLANDS & ISLANDS SURCHARGE

When ordering large bulky items to isolated parts of the UK a postage surcharge may be applied to your order. If this is the case we will email you informing you of the surcharge and await for your confirmation prior to processing your order.

 INTERNATIONAL DELIVERIES 

Due to ever increasing postage costs and difficulties at Borders, we have unfortunately had to suspend International Deliveries.

If you have any queries, please contact our Customer Service Team on sales@allterraincycles.co.uk

 

CYCLESCHEME SURCHARGES

We deliver Cycle to Work bikes for a £35 charge to Mainland UK (Highlands and Islands £60)

We deliver Cycle to Work eBikes for a £59.99 charge to Mainland UK (Highlands and Islands £99.99)

 

STORE COLLECT // DELIVERY POLICY

STORE COLLECT

The Salts Mill store is open Monday to Saturday 9.00am to 5.30pm for collection of goods. You will be notified when your order is ready for collection via email or text.

Returns can be brought back to the store, and we will endeavour to resolve exchanges whenever possible on the day but this may not always be possible due to stock.

UK DELIVERY POLICY

Please note that we will need to wait 21 Days from dispatch before we can investigate the non-arrival of an item sent by Royal Mail Signed For.

All parcels must be signed for, unless you have previously given your consent, at the time of placing your order, for the consignment to be left somewhere without a signature.

Please note if your parcel is left at your request, without a signature, you forfeit your right to make any claim with ourselves or the courier in the event of loss or damage.

 

 

OUR RETURNS POLICY

  • Goods must be returned within 30 days of receipt.
  • Returned goods must be unused, in a saleable condition and in their original packaging with all labels still attached.
  • Goods must not be fitted or used.
  • All Goods must be accompanied with a Completed Returns Form.
  • Goods can be returned to the Store for a refund or exchange. A Completed Returns form must accompany all goods returned to the store; the refund however will be processed by the Mail Order Customer Service Staff and not by the Store Staff so the refund may not be immediate.

 

CLICK HERE TO DOWNLOAD OUR RETURNS FORM

 

FAULTY, DAMAGED OR BROKEN GOODS

All goods purchased from All Terrain Cycles are covered by a full warranty. The duration of this warranty is at least 1 year but some manufacturers offer extended warranty. Generally speaking, warranties cover manufacturing faults and defects but do not cover damage caused by crashing, abuse, general wear and tear etc. If you feel that the product you have purchased from All Terrain Cycles has developed a fault then please contact us before returning goods as many problems may be solved without you incurring postage costs. If the goods need to be returned:-

Goods must be clean, not covered in muck and oil. Goods must be accompanied with Completed Returns Form. Unfortunately postage costs cannot be covered but we will try our best to resolve any problem you have as it is in our interest to have a happy customer!

 

NEW ITEMS RETURNED BECAUSE WE HAVE POSTED THE WRONG ITEM

Believe it or not we do make mistakes on the odd occasion! If we have sent you a part which is different to what you have ordered we will be happy to make an exchange and pay your postage costs for returning the item.

  • Goods must be returned within 7 days of receipt.
  • Goods must be in original packaging.
  • Goods must not be fitted or used.
  • You will have to pay the cost to return the goods but we will then refund these costs to you once safely received.
  • Goods must be accompanied with a Completed Returns Form.
  • Please email us at sales@allterraincycles.co.uk before returning any goods

 

    FAST TRACK RETURN OPTION

    If you are in an extreme hurry to get your return processed, you can opt for an All Terrain Cycles Fast Track Return. With this option, you simply place a new order for the replacement item and we will charge and send the order out to you as normal. Then you can simply return the original item for a refund.

    You will be charged in full for the replacement goods when they are sent out. The Fast Track Return Option can only be processed on new items for exchange and does not apply to faulty, damaged or warranty inspection items.

    • The original items must be returned within 21 days of receipt.
    • Goods must be in original packaging.
    • Goods must not be fitted or used.
    • We will refund your card on receipt of the returned item.

      What wheel size does the Trek FX Sport SL 4 2027 - Matte Deep Smoke use?

      The Trek FX Sport SL 4 2027 - Matte Deep Smoke uses 28.0" wheels.

      Does the Trek FX Sport SL 4 2027 - Matte Deep Smoke have a 1x drivetrain?

      Yes. The Trek FX Sport SL 4 2027 - Matte Deep Smoke is specified with a 1x drivetrain for simpler shifting and fewer components.

      Is the Trek FX Sport SL 4 2027 - Matte Deep Smoke a carbon fibre frame?

      Yes. The Trek FX Sport SL 4 2027 - Matte Deep Smoke is a carbon fibre fitness bike designed for lightweight performance.

      Is the Trek FX Sport SL 4 2027 - Matte Deep Smoke an e-bike with a motor or battery?

      No. The specification and marketing information for the Trek FX Sport SL 4 2027 - Matte Deep Smoke do not indicate any motor or battery; it is not an e-bike.

      At All Terrain Cycles, we want you to ride with confidence every time. To ensure your bike or e-bike stays in peak condition, here are some essential safety and maintenance tips.

      Bicycle Safety 

      Always wear a helmet – Safeguard against head injuries by using a properly fitted, safety-certified helmet.

      Perform pre-ride checks – Before each ride, verify that brakes, tyres, and gears are in good working order.

      Stay visible – Utilise lights and reflective gear when cycling in low-light conditions.

      Follow road rules – Ride responsibly and remain aware of your surroundings.

      Aftercare for Your New Bike Initial Check-Up (First 50-100 miles)

      Gear Adjustment – New cables may stretch slightly; have a qualified mechanic check and adjust them.

      Brake & Wheel Check – Inspect brakes for wear and ensure wheels are aligned properly.

      Lubrication – Apply chain oil and check bolt tightness to maintain smooth performance.

      Tyre Pressure – Regularly monitor to prevent flats and enhance efficiency.

      Pedals - Ensure pedals are still tight and correctly fitted.

      Routine Maintenance (Every Few Weeks)

      Chain Care – Clean and lubricate your chain to minimise wear and prolong its life.

      Brake Safety – Check brake pads and responsiveness before each ride.

      Tyre Inspection – Look for punctures and ensure correct air pressure.

      Handlebar & Stem Alignment – Confirm they are tight and secure to prevent instability.

      Frame Safety Check – Look for any signs of damage or cracks.

      Pedals - Ensure pedals are still tight and correctly fitted.

      Professional Check-Ups

      Have your bike serviced at least once a year, or more frequently if you ride often.

      Aftercare for Your New Electric Bicycle (e-Bike) Initial Check-Up (First 50-100 miles)

      Battery Care – Fully charge your battery (if required) before the first ride and store it in a dry, moderate-temperature environment.

      Avoid Overcharging – Unplug the charger once fully charged to extend battery life.

      Pedals - Ensure pedals are still tight and correctly fitted.

      Routine e-Bike Maintenance (Every Few Weeks)

      Motor Inspection – Listen for unusual noises and ensure smooth operation.

      Battery & Connection Checks – Inspect cables and connectors for dirt, moisture, or damage.

      Pedals - Ensure pedals are still tight and correctly fitted.

      Seasonal e-Bike Maintenance

      Check Electrical Components – Ensure wires and connections are clean and secure.

      Professional Servicing – Have your e-bike inspected at least once a year or every 500-1000 miles for optimal performance.

      By following these aftercare guidelines, you’ll help ensure that your bicycle runs smoothly, lasts longer, and remains a joy to ride. Stay safe and enjoy the ride!

      Read our full advice

      If you have any problems or concerns: Contact All Terrain Customer Services on 01274 588488 or email sales@allterraincycles.co.uk

       

      SHIPPING COSTS

       

      UK Delivery Information

      Standard Delivery (Non-Bike Orders)

      • £5.99 flat rate for all non-bike orders

      • FREE delivery on orders over £999

      Standard Delivery Bike Orders – UK Mainland

      • Bikes under £999: £12.99 delivery fee

      • Bikes over £999: FREE delivery

      Highlands of Scotland 

      Bike & E-bikes -  £46.99

      Isle of Wight

      Bike & E-bikes - £46.99

      Industrial Scotland

      Bike & E-bikes - £22.99

      Grampian Region

      Bike & E-bikes - £36.99

      Scottish Offshores

      Bike & E-bikes - £96.99

      Northern Ireland

      Bike & E-bikes - £111.99

      Channel Islands

      Bikes - £149.99

      E-bikes - £199.99

      Accessoires - £49.99

      Isle of Man

      Bike & E-bikes - £96.99

      HIGHLANDS & ISLANDS SURCHARGE

      When ordering large bulky items to isolated parts of the UK a postage surcharge may be applied to your order. If this is the case we will email you informing you of the surcharge and await for your confirmation prior to processing your order.

       INTERNATIONAL DELIVERIES 

      Due to ever increasing postage costs and difficulties at Borders, we have unfortunately had to suspend International Deliveries.

      If you have any queries, please contact our Customer Service Team on sales@allterraincycles.co.uk

       

      CYCLESCHEME SURCHARGES

      We deliver Cycle to Work bikes for a £35 charge to Mainland UK (Highlands and Islands £60)

      We deliver Cycle to Work eBikes for a £59.99 charge to Mainland UK (Highlands and Islands £99.99)

       

      STORE COLLECT // DELIVERY POLICY

      STORE COLLECT

      The Salts Mill store is open Monday to Saturday 9.00am to 5.30pm for collection of goods. You will be notified when your order is ready for collection via email or text.

      Returns can be brought back to the store, and we will endeavour to resolve exchanges whenever possible on the day but this may not always be possible due to stock.

      UK DELIVERY POLICY

      Please note that we will need to wait 21 Days from dispatch before we can investigate the non-arrival of an item sent by Royal Mail Signed For.

      All parcels must be signed for, unless you have previously given your consent, at the time of placing your order, for the consignment to be left somewhere without a signature.

      Please note if your parcel is left at your request, without a signature, you forfeit your right to make any claim with ourselves or the courier in the event of loss or damage.

       

       

      OUR RETURNS POLICY

      • Goods must be returned within 30 days of receipt.
      • Returned goods must be unused, in a saleable condition and in their original packaging with all labels still attached.
      • Goods must not be fitted or used.
      • All Goods must be accompanied with a Completed Returns Form.
      • Goods can be returned to the Store for a refund or exchange. A Completed Returns form must accompany all goods returned to the store; the refund however will be processed by the Mail Order Customer Service Staff and not by the Store Staff so the refund may not be immediate.

       

      CLICK HERE TO DOWNLOAD OUR RETURNS FORM

       

      FAULTY, DAMAGED OR BROKEN GOODS

      All goods purchased from All Terrain Cycles are covered by a full warranty. The duration of this warranty is at least 1 year but some manufacturers offer extended warranty. Generally speaking, warranties cover manufacturing faults and defects but do not cover damage caused by crashing, abuse, general wear and tear etc. If you feel that the product you have purchased from All Terrain Cycles has developed a fault then please contact us before returning goods as many problems may be solved without you incurring postage costs. If the goods need to be returned:-

      Goods must be clean, not covered in muck and oil. Goods must be accompanied with Completed Returns Form. Unfortunately postage costs cannot be covered but we will try our best to resolve any problem you have as it is in our interest to have a happy customer!

       

      NEW ITEMS RETURNED BECAUSE WE HAVE POSTED THE WRONG ITEM

      Believe it or not we do make mistakes on the odd occasion! If we have sent you a part which is different to what you have ordered we will be happy to make an exchange and pay your postage costs for returning the item.

      • Goods must be returned within 7 days of receipt.
      • Goods must be in original packaging.
      • Goods must not be fitted or used.
      • You will have to pay the cost to return the goods but we will then refund these costs to you once safely received.
      • Goods must be accompanied with a Completed Returns Form.
      • Please email us at sales@allterraincycles.co.uk before returning any goods

       

        FAST TRACK RETURN OPTION

        If you are in an extreme hurry to get your return processed, you can opt for an All Terrain Cycles Fast Track Return. With this option, you simply place a new order for the replacement item and we will charge and send the order out to you as normal. Then you can simply return the original item for a refund.

        You will be charged in full for the replacement goods when they are sent out. The Fast Track Return Option can only be processed on new items for exchange and does not apply to faulty, damaged or warranty inspection items.

        • The original items must be returned within 21 days of receipt.
        • Goods must be in original packaging.
        • Goods must not be fitted or used.
        • We will refund your card on receipt of the returned item.