Buy now · British Racing Edition

DECREE SL9.

A high-performance carbon endurance road bike, balancing all-day comfort with all-out speed. Full Dura-Ace Di2, hand-built Scribe wheels and premium finishing details — fully assembled in a UK workshop.

The frame

Aero, light and built for speed.

Toray T800, T1100 and M40J carbon with aero shaping, meeting endurance geometry for longer rides. A Winspace HYPER 2 Riser bar carries every cable inside the bar and stem, so the front end stays clean, while hidden frame storage gives essentials a home.

The build

An epic specification.

Full Shimano Dura-Ace Di2 with 4iiii dual-sided power metering leads the specification, alongside the flagship Scribe Élan Ultra 5 — carbon wheels hand-built in Belfast. S-Parts gold titanium hardware completes the build.

Headline spec
Frameset & fit
Frame
Toray T800 + T1100 + M40J carbon, aero endurance geometry, fits tyres up to 38mm
Frame size
56cm
Weight
7.23kg without pedals
Fork
P-BIKES aero carbon fork
Wheels & tyres
Wheels
Scribe Élan Ultra 5 — ultralight, with new OSL8 carbon spokes, ceramic bearings, hand-built in Belfast
Tyres
Vittoria Corsa Pro 700×30c TLR (tubeless ready)
Inner tubes
Revoloop No001 ultralight TPU
Thru axles
Overfast custom-made ultralightweight carbon thru axles
Cockpit & seat post
Cockpit
Winspace HYPER 2 Riser Handlebar, 400mm wide, 105mm stem, fully internal cable routing
Seat post
Gloss black carbon, 0mm offset, 15mm offset post also supplied
Drivetrain
Groupset
Shimano Dura-Ace Di2 electronic, hydraulic disc
Chainset
FC-R9200 Dura-Ace 12-speed double chainset, 52 / 36T, 170 mm, with 4iiii PRECISION 3+ PRO dual-sided powermeter
Bottom bracket
Bikone T47/T47a Ceramic PowerSet Bottom Bracket for Shimano, developed with Team UAE
Cassette
Shimano Dura-Ace CS-R9200 12-speed, 11-34T
Chain
KMC X12L Ti-N Gold Light Waxed 126L
Bearings & pulleys
Kogel Speed Kolossos Oversized Derailleur Cage
Derailleur hanger
Frames and Gear Direct Mount Derailleur Hanger for UDH, gold
Braking
Brakes
Shimano Dura-Ace R9270 hydraulic disc
Disc rotors
Shimano Dura-Ace RT-CL900 Ice Tech Freeza with internal lockring, 160mm front, 140mm rear
Contact points
Bar tape
Brooks England microfibre bar tape
Saddle
P-BIKES ultralight 3D-printed carbon road saddle — just 146g
Finishing touches
Technology
Magene C706 smart GPS bike computer and Magene L508 radar tail light
Frame storage
Integrated hidden storage compartment
Hardware
Selected S-Parts gold titanium bolts
Finish
Gloss metallic British Racing Green with gold accents
The collaborators

Nine obsessive brands on the DECREE SL9.

A bike like this isn't built alone. It takes the right brands and the right people willing to put their name on it — a great team is everything.

Wheels
Scribe

Wind-tunnel-tested carbon wheelsets, hand-built and inspected in Belfast.

Inner tubes
Revoloop

TPU tubes engineered in Aachen — up to three times lighter than butyl.

Power meters
4iiii

Crank-based power meters that show exactly what you put into the bike.

Bearings & pulleys
Kogel

Ceramic bearings and pulley wheels, finished in over 150 hand-applied colours.

Direct mount hanger
Frames and Gear

Precision CNC-machined parts from Copenhagen, raced in the WorldTour.

Bottom bracket
Bikone

Precision-machined bottom brackets built to an uncompromising tolerance.

Thru-axles
Overfast

The world's lightest carbon thru-axles — a pair from just 30 grams.

Power & data
Magene

Power meters, GPS heads and sensors that make every watt count.

Titanium hardware
S-Parts

Aerospace-grade titanium bolts, anodised gold.

The biggest collaboration of all

Built by Jon. Filmed for everyone.

Jon is the mechanic and filmmaker behind The Cycle Workshop. He assembles the whole DECREE SL9 and films the process for his channel, giving you a closer look at what goes into the finished bike.

20,000+views on YouTubeand counting
The DECREE SL9 build film by The Cycle Workshop on YouTube
The Cycle Workshop@thecycleworkshop
Available now

Buy the bike now.

The DECREE SL9 British Racing Edition is available now. Get in touch to discuss pricing and delivery, and secure something truly special.

Project Bikes

We're making
something special.

The P-BIKES DECREE SL9 British Racing Edition is being finished behind the scenes, and the site is having its own polish too.

Back soon — worth the wait.

Any questions in the meantime: info@projectbikes.uk