Home » GRADIENT // GRAVEL DISC
Gradient bicycle on a white background with 'Gradient' branding.
Gradient bicycle on a white background with 'Gradient' branding.

GRADIENT // GRAVEL DISC

The Gradient is an unprecedented engineering achievement.
It combines a hydro-formed 3AL-2.5V titanium tube set, reminiscent of our favourite steel tubing Columbus Spirit HSS, with the adventure frame geometry which Mark Reilly perfected over a 30-year frame building career. Mark's design work on the Gradient was so progressive that its launch pre-dated the whole gravel phenomenon.
The Gradient is the embodiment of titanium’s classic ‘flex and flow’, guaranteeing all-day comfort. Whether you’re riding road, gravel, audax, cycle cross, touring or commuting, this is the perfect ‘do-it-all’ bike!
Shop the full range - Ti Gravel Bikes | Titanium Gravel Bikes
£4,399.00 For international orders, UK VAT has been removed.
Size
FOR INTERNATIONAL ORDERS - UK VAT HAS ALREADY BEEN REMOVED.
FOR INTERNATIONAL ORDERS - VIEW CART FOR TAX AND DUTIES CALCULATOR
To reserve your bike and secure a place in the build queue, a fully-refundable deposit equivalent to 25% of the build cost or frameset is required.
Instructions: Add items to cart → Proceed to checkout → Enter your contact information.
Enter your shipping details → Once on the payment section, select "Bank Deposit".
After clicking "Complete Order", you will be presented with an Order Confirmation page which displays our bank details. Please use your surname as a payment reference.

CONTACT THE SALES TEAM TO DISCUSS YOUR BUILD OR BOOK A DEMO RIDE

Chat Email 01959528253

Share the Gradient on social media

The Reilly Gradient is a purpose built titanium gravel bike designed for off-road adventure. Featuring a carbon fork, hydraulic disc brakes and clearance for up to 47mm tyres, the Reilly Gradient delivers comfort, control, and durability for long-distance riding.
The following spec applies to a base build. All of the options can be customised to suit your requirements.
Titanium Grade 3AL-2.5V
Bottom Bracket Shell BSA English Threaded
Bottom Bracket As per groupset manufacturer
Groupset GRX 600 1x mechanical
Rear Derailleur Mount Standard
Rear Derailleur Mount (Updated) UDH
Cable Routing External gear cable routing; internal downtube brake hose routing
Fork UDM Carbon Fork (3 cage mounts each leg + mudguard mount). Standard fork 50mm rake
Brakes Hydraulic Disc with Flat-Mount Calipers
Rotors 160F / 140R
Thru Axles 100mm x 12mm F; 142mm x 12mm R
Wheels All-road, alloy
Tyres Panaracer SK or X1
Max Clearance 700c: 47mm; 650b: 50mm
Headset Reilly Aluminium Headset, Black (44mm head tube, 1.1/8"–1.5" steerer)
Bars / Width Reilly Aluminium Compact Bars (Drop 125mm; Reach 75mm; Flare 4°)
Stem / Length Reilly Aluminium Stem 80mm / 90mm / 100mm / 110mm (Angle: 84° / -6°) or suitable alternative
Bar Tape Black EVA Bar Tape
Seatpost Reilly UD Carbon Seatpost, 31.6mm x 350mm, 2x 6AL-4V titanium bolts
Seat Clamp Hope Alloy Seat Clamp available in red, blue, black, smoke, orange or purple
Saddle Reilly Titanium Alloy ‘Airform’ Saddle
Frame Features Mudguard mounts, pannier mounts, x4 cage mounts (incl. downtube tool mount + top tube bento mount)
Set-Up British Standard (right lever = front brake, left lever = rear brake)
Finish Vinyl decal in black, blue or red as standard
Warranty Lifetime Frame Warranty (Original Owner Only, Non-Transferable) T&Cs Apply
All measurements are in milimeters. For mobile users, please use the horizontal scroll bar to view all sizes.
SIZE XXS XS S M L XL XXL
SEAT TUBE C/TOP 460mm 470mm 490mm 510mm 530mm 550mm 570mm
TOP TUBE VIRTUAL 500mm 520mm 540mm 550mm 570mm 590mm 605mm
BB HEIGHT 275mm 275mm 275mm 275mm 275mm 275mm 275mm
CHAINSTAY LENGTH 430mm 430mm 430mm 430mm 430mm 430mm 430mm
SEAT TUBE ANGLE 76° 76° 75° 74° 73.5° 73° 73°
HEAD TUBE ANGLE 69.5° 70.5° 71° 71.5° 72° 72° 72°
FORK RAKE 47mm 47mm 47mm 47mm 47mm 47mm 47mm
HEAD TUBE 100mm 100mm 120mm 135mm 155mm 175mm 195mm
AXLE TO CROWN 400mm 400mm 400mm 400mm 400mm 400mm 400mm
STACK 527mm 531mm 552mm 568mm 589mm 608mm 626mm
REACH 369mm 388mm 392mm 387mm 396mm 404mm 413mm
WHEELBASE 1014mm 1025mm 1032mm 1028mm 1038mm 1053mm 1068mm
FRONT CENTRE 594mm 605mm 612mm 607mm 618mm 632mm 647mm

All our bikes are available to demo from our workshop (TN16 3AG) Book a Demo Ride

View table

Bike Fit Contact Form

View FAQs

View Delivery & Returns information

Road CC / David Arthur – “Fun and capable adventure road bike with great looks to match the great ride.” Read the full 4-star review on Road CC

"The Gradient is right at home negotiating narrow tree-lined singletrack with loose corners and steep climbs and would be a good choice if you're looking for a bike to tackle one of the growing number of gravel events like the Dirty Reiver."

Gritcx / Mark Tearle – “Where this bike really excels, in my view, is when you point it downwards.”

"I want one. I won’t rest until I get one. I know that if this bike was in my shed that, more often than not, it is the bike I would grab more than any others to take me out on adventures. It’s so versatile, so capable and so damned pretty. This is a bicycle that doesn’t ask, it just insists and, well, who am I refuse?"

ADVNTR CC / James Deane – “I could tell the Gradient was going to be a fun bike to ride as soon as I saw it. And I was right.” Read the full review on Advntr CC 

"The Gradient is a thoroughly modern ‘go anywhere’ bike. Equally at home on or off road, it will take you anywhere. And it will do it fast! Progressive geometry means the Gradient is capable running both 700c and 650b wheels."
  • Reilly Titanium Gravel bike in urban setting
  • Dirty adventure bike with bags strapped to frame in front of a canyon.
  • A titanium gravel bike on white with two small apidura bags.
  • A titanium bike resting on a log in a park.
  • A titanium Reilly bike leaning against a brick wall.
  • A titanium gravel bike with purple trim against a white background.
  • A young man rides a full laden bike across a gravel surface.
  • A fully packed adventure bike.
  • A titanium bike with a panier rack and flat handlebars and the Thames river in the background.
  • A gradient with orange decals, orange headset and orange seat clamp.
  • An adventure bike with full suspension fork and heavy duty gravel tyres on a tree root.
  • An adventure bike with painted brown frameset on a wall.