Basso Bikes Astra 105 Di2 Cosmic S CobaltBike 2026

£3,999.00

Finance available with Novuna Personal Finance

XXS
XS
S
M
L
XL
XXL

Part Number:

BX2331PAL

GTIN:

5014977837250

Can a bike designed for the road still perform on dirt? Some road bikes are capable of being adapted; the Astra was created to be whatever you need it to be... striking the perfect balance between road racing and the rough stuff, welcome to All-Road.The UCI Approved Astra maintains its vocation of road cycling but increases stability and comfort. It's light, but without pushing the carbon to its limits, preserving Basso's racing DNA but makes it transversal, for those who are not professional athletes, but who want to ride their bikes every day.The new frame features dropped seatstays, a 12mm higher stack height and 3mm shorter reach, creating a slightly more relaxed riding experience. The 35mm tyre clearance allows you to mount wider tyres and venture beyond the tarmac on to light dirt roads.**Technology****3k Toray Ca High Modulus Carbon Fibre** The frame is produced entirely in-house, by skilled hands at Basso Italy, its features are designed to amplify the fun factor, for those who just want to get in the saddle, no matter what their definition of riding. Basso was among the first bike brands to research, develop and employ carbon in its frames, researching new methods and techniques to continually improve performance, reliability, and durability. **Paradigma Integration System** Multiple cables running through a tight space often results in slow and heavy steering. Basso has been able to integrate internal routing whilst maintaining steering lightness and precise handling. The body of the Paradigma Stem remains cable free, so can be removed at any time without the need to disconnect the cables, making it easier to maintain your bike, transport it in a travel case or bag, or change the length of your stem.**3B Clamp System Gen 2:** A totally hidden seatpost fixing solution that is invisible on the frame, intertwining technological and aesthetic innovation. This lightweight and strong integrated clamping solution offers the additional benefit of an anti-vibration function, further improving your riding experience by elevating comfort on uneven and bumpy surfaces.Frame Specs:* Sizes: XXS (45), XS (48), S (51), M (53), L (56), XL (58) XXL (61)* Compatible with Electronic and Mechanical groupsets* Cable Integration: Fully Integrated* Brakes: Flat Mount Disc* Bottom Bracket: BB86 86.5 X 41* Stem: Basso Paradigma -8 Deg* Seatpost: Basso 15mm layback* Headset: Fully Integrated* Tyre Clearance: 35mm* Thru Axles: 100/142mm x 12mm* Frame Weight: 980g* Warranty: Covered under Basso's 2 Year warranty* Made in Italy**Bike Specifications:*** Components: Shimano Ultegra Di2 12x* Chainset: Shimano Ultegra Di2 12x* Disc Brakes: Shimano Ultegra Di2 12x Hydro* Disc Rotors: Shimano Ultegra ICE Rotors 160/160mm* Cassette: Shimano 105 12x* Chain: KMC 12x Silver/Black* Saddle: San Marco Monza* Handlebar: Microtech All Road* Stem: Basso Paradigma* Seatpost: Basso Integral Carbon* Wheelset: Mavic Cosmic S Centre Lock Disc UST * Tyres: Schwalbe Lugano II K-Guard 700x28c**Please Note: Bikes built in-house are supplied with 30mm of headset spacers. For any additional requirements please state in the notes box at the point of checkout.****Spec may be subject to change due to availability**

Professionally Built Before Dispatch

Every bike purchased from On It Sports is built in-store by our experienced team and undergoes a full pre-delivery inspection (PDI) before being carefully prepared for shipping.

We take pride in ensuring each bike leaves our workshop properly assembled, checked, and ready for final setup, helping you enjoy a smooth and confident first ride.

Some final assembly will be required on delivery, but we aim to keep this to a minimum wherever possible.


Free UK Mainland Bike Delivery

  • Free UK mainland delivery on bikes over £1000*
  • Bikes are professionally built, checked, and securely boxed before dispatch
  • Shipped using trusted UK courier services

*Bikes purchased through Cycle to Work schemes are excluded from free shipping.

A standard bike delivery charge of £45 applies.


Collect In Store & Free Basic Bike Fit

If you choose to collect your bike from our store, you’ll receive a free basic bike fit as part of your collection.

This includes:

  • Correct saddle height and position
  • Basic reach and comfort checks
  • Confidence that your bike is set up correctly from day one

Once your bike is ready, we’ll contact you by email to arrange a convenient collection and bike fit appointment.


Returns, Refunds & Exchanges

If you’re not completely satisfied with your purchase, please let us know. We offer a 30-day return or exchange period on items purchased with a valid receipt.

To be eligible for a return or exchange:

  • Items must be unused and in a resaleable condition
  • Original packaging, accessories, labels, and any free or promotional items must be included

Returns requested after 30 days cannot be accepted.

Save with Cycle to Work

We accept Cycle to Work vouchers on most full-price bikes through a wide range of approved schemes. Simply choose your bike, proceed through checkout, and select your Cycle to Work scheme at the payment stage.

Our checkout will guide you through the process, including any additional information required by your chosen scheme.


What You Can Include

Your Cycle to Work voucher can be used on:

  • Bikes
  • Helmets
  • Shoes
  • Clothing
  • Essential cycling accessories

This allows you to maximise your voucher and get everything you need in one purchase.


Using Cycle to Work at Checkout

When you reach payment:

  1. Select Cycle to Work as your payment option
  2. Choose your scheme from the dropdown list
  3. Enter the required voucher or scheme details
  4. Complete checkout

Our team will then process your order and contact you if anything further is required.


Important Information on Sale Bikes

* Sale bikes purchased using a Cycle to Work voucher may be subject to a surcharge.

This reflects the commission charged by Cycle to Work scheme providers.

If you’re considering using a Cycle to Work voucher on a discounted bike and want to confirm pricing before ordering, please contact us and we’ll be happy to help.

Colours Grey
Sizes L, M, S, XL, XS, XXL, XXS
Brand Basso Bikes
Model Year 2026
Barcodes 5014977837250, 5014977837267, 5014977837274, 5014977837281, 5014977837298, 5014977837304, 5014977837311
SKUs / Part Numbers BX2331PAL, BX2331PAM, BX2331PAS, BX2331PAXL, BX2331PAXS, BX2331PAXXL, BX2331PAXXS

Please note: Manufacturers can sometimes change the specification of the products from time to time.