Basso Astra
Astra Ultegra Di2 Cosmic S
Enlight your cycling. A high-performing yet versatile carbon road bike, developed around real riders' lives – from training and sportives to weekend exploring.
Colours
Colour options
Available in 3 factory colours. Custom paint and alternative builds can be specified through Basso's configurator – ask in store.
Black Opal
Cobalt Grey
Polar White
Basso Astra
Performance and versatility in one
Astra is designed to suit very different occasions and to amplify the lifestyle of whoever is in the saddle. Some bikes can be customised – Astra was created to be.
Train and race
Racing DNA for early-morning training rides and local races.
Explore and share
Comfortable and practical for group rides, sportives and discovering new roads – handcrafted in Italy.
Go anywhere
Tough enough for long trips and rough roads, refined enough for the café stop.
Versatility and completeness
Light, comfortable and capable
Astra keeps its road vocation but is less twitchy and more comfortable, at around 980g for the frame with Basso's premium technologies.
35mm tyre clearance
Fit wider tyres for comfort and venture beyond tarmac onto light gravel roads.
The most Basso geometry
Derived from Basso's steel race bikes and refined year after year – race DNA made accessible to riders who aren't full-time athletes.
Cockpit options
Microtech stem and All Road handlebar on 105 Di2 builds; Levita integrated carbon cockpit available on Ultegra Di2 builds.
Technologies
Basso details
Integration and adjustability that make Astra easy to live with.
3B Clamp System Gen 2
A hidden three-bolt seatpost clamp, vulcanised for an anti-vibration effect that improves comfort on bumpy surfaces.
Basso Ecosystem
Integrated accessory system with mounts for computers and bags.
Two seatpost setbacks
15mm setback as standard, with a 0mm option available.
Build highlights
UK specification
Astra Ultegra Di2 Cosmic S specification
Specification as supplied by Basso's UK distributor. Components may change subject to availability.
Frameset
- Frame
- Basso Astra carbon, made in Italy. 980g
- Fork
- Basso Astra full carbon, 12x100mm thru axle
- Headset
- Fully integrated
- Bottom bracket
- BB86 86.5 x 41
- Axles
- 100/142mm x 12mm thru axles
- Brakes mount
- Flat mount disc
- Tyre clearance
- 35mm
- Cable routing
- Fully integrated, electronic and mechanical groupsets
- Warranty
- 2 years
Drivetrain
- Groupset
- Shimano Ultegra Di2 12-speed
- Crankset
- Shimano Ultegra Di2 12x
- Cassette
- Shimano 105 12-speed
- Chain
- KMC 12x Silver/Black
Brakes
- Brakes
- Shimano Ultegra hydraulic disc
- Rotors
- Shimano Ultegra Ice-Tech 160/160mm
Wheels & tyres
- Wheels
- Mavic Cosmic S Centerlock Disc UST
- Tyres
- Schwalbe One Performance TLE 700 x 30c
Cockpit & contact points
- Handlebar
- Microtech All Road
- Stem
- Basso Paradigma -8°
- Saddle
- San Marco Monza
- Seatpost
- Basso integral carbon, 15mm setback
Geometry & sizing
Astra geometry
Astra frame geometry. All measurements in millimetres. Not sure of your size? Our bike fit team can help you choose.
Geometry chart
| Size | XXS (45) | XS (48) | S (51) | M (53) | L (56) | XL (58) | XXL (61) |
|---|---|---|---|---|---|---|---|
| Seat tube (A1) | 450 | 480 | 510 | 530 | 560 | 580 | 610 |
| Top tube (B) | 505 | 515 | 525 | 545 | 560 | 575 | 590 |
| Reach (R) | 371.1 | 371.1 | 374.5 | 380.4 | 382.1 | 384.4 | 385.5 |
| Stack (S) | 538.9 | 538.9 | 563.4 | 575.9 | 602.4 | 625.4 | 650.4 |
| Seat angle (C) | 76° | 75° | 75° | 74° | 73.5° | 73° | 72.5° |
| Head angle (D) | 71.8° | 71.8° | 72° | 72.3° | 73.5° | 73.5° | 74° |
| Chainstay (E) | 404 | 404 | 404 | 404 | 406 | 410 | 410 |
| BB to fork (F) | 576.9 | 576.9 | 586.4 | 593.2 | 590 | 599 | 602 |
| Head tube (H) | 125 | 125 | 150 | 162 | 180 | 204 | 228 |
| Bar width c/c (M) | 400 | 400 | 420 | 420 | 420 | 420 | 440 |
| Stem length (N) | 80 | 90 | 100 | 110 | 110 | 120 | 120 |
Ordering
Available from The Cycle Collective
Available to order through The Cycle Collective in Dorking. For availability, sizing advice or a bike fit, call 0203 148 6764 or email hello@thecyclecollective.cc.
Product Information
Why buy your bike from The Cycle Collective?
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Speak to an expert
Expert advice
Call, WhatsApp or drop into our Dorking shop. We'll talk through your riding, sizing and set-up so you get the right bike first time. Find out more
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Learn about Cycle to Work
Cycle to Work schemes
We accept vouchers from all the major schemes. Pay from your gross salary and typically save 28–47% on your new bike and kit, depending on your tax rate. Find out more
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Book a bike fit
Expert bike fitting
A one-to-one fitting session of three hours or more in our private studio, with a free follow-up as you settle in. Find out more
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Our workshop
Workshop aftercare
Cytech-qualified mechanics, electronic groupset specialists and same-day servicing when you're in by 10.30am, subject to parts. Find out more
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Delivery and collection
Delivery options
Free UK delivery on orders of £50 and over, or free click and collect from our shop in Dorking. Find out more
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Pay with Klarna
Spread the cost
Pay with Klarna at checkout and see your payment options, with full terms, before you confirm anything. Find out more
