XTR Pepo: Ducati 999 Tricolore

Ducati Tricolore Custom
Photos by Sergio Cardeña

In 1988, Ducati unleashed the Desmoquattro 851 engine, the first desmodromic twin with liquid-cooling, four valves per cylinder, and electronic fuel injection. The engine found its way into one of the iconic sports bikes of the era, the 851 Tricolore, a homologation special that boasted 102 hp and a dry weight of 204 kg (450 lbs).

“World Superbike racers were required to be based on production streetbikes. One way to get the highest-specification base model possible was to build homologation specials — expensive, limited-edition versions that needed relatively minor modification to be track-ready. Ducati took this so-called ‘kit bike’ approach with the 851 Superbike. Just 207 of these nominally street-legal machines were hand-built, enough to satisfy World Superbike rules, with an estimated 20 examples coming to the U.S.” –Bonhams

851 Tricolore

The racer would prove its mettle in World Superbike, where the 851 and its derivatives took home 11 manufacturers’ titles over the next decade and a half.

Ducati Tricolore Custom

Our friend Pepo Rosell, the world-class builder behind XTR Pepo and an aficionado of vintage endurance racers and superbikes, had been wanting to build an 851 for quite some time. Finally, the right project arrived.

“This bike is a commission from a guy who wanted to race in Classic Endurance races. The rules allowed the use of bikes from the late 80’s to the early 90’s and the 851 was right there. For a long time I’ve wanted to build an optimized 851 and bingo this guy asked me to make one.”

Ducati Tricolore Custom

From the beginning, Pepo’s vision was clear — an 851-inspired machine with a more modern, powerful, and reliable engine like that of the 999. As it would be prohibitively expensive and possibly wicked to cut up an original 851, Pepo decided to start nearly from scratch:

“As finding an original Ducati 851 to work on was very difficult and expensive, I decided to ‘work from zero,’ using a Ducati Monster 600 (carbureted) frame…”

Ducati Tricolore Custom

Pepo modified the Monster 600 frame to 851 specs, then fitted a blueprinted Monster S4Rs (999 Coppa Bassa) engine that boasts a lightweight flywheel, slipper clutch, high-flow airbox, and other mods. (These Coppa Bassa or “Low Cup” superbike engines provided better lubrication at extreme angles of lean.) The bike is rolling on a set of Ducati ST3 wheels and adjustable forks with Brembo brakes, Continental Race Attack rubber, and a YSS rear shock custom-built for the bike.

Ducati Tricolore Custom

The tail section is an 888 solo unit with XTR custom upholstery, while the front fairing is an 851 model modified to run a Cagiva Mito 125 Lawson replica headlight. The tank is an 851 fiberglass unit with quick-release fillers and a transparent strip for reading the fuel level. The list goes on…a full build sheet is included below.

Ducati Tricolore Custom

Pepo says the bike has a dry weight of just 165.8 kilograms (~365 lbs) — around 85 pounds lighter than the original!

As for the livery, there’s no mistaking the inspiration — the same proud colors as those of the Italian flag.

“I was tired of red bodywork and white frames (it’s so typical), so I wanted to make a tribute to the first 851, the Tricolore.”

Leaning on his deep knowledge of racing history and unbeatable eye for detail, Pepo has created a Ducati Tricolore custom that’s not only a tribute to the iconic original, but unmistakably XTR in execution. Bravissimo, Pepo!

Build Sheet: XTR Tricolore

Ducati Tricolore Custom

  • Donor Bike: Project made from zero starting with a ’94 Ducati Monster 600 frame
  • Modified Ducati Monster 600 frame to Ducati 851 specification
  • Fabrication of reinforced frame parts to strengthen the chassis
  • Fabrication of rear subframe fittings.
  • VS Frame 851 aluminium rear subframe
  • Ducati Monster 600 swingarm
  • YSS Adjustable rear shock made specifically for the bike
  • Aluminium rear suspension rocker lightened
  • XTR carbon fiber rear mudguard
  • Ducati ST3 rear wheel
  • Brembo rear brake rotor
  • Brembo rear brake caliper
  • Alluminium adjustable rear brake rod
  • Frentubo kevlar rear brake line
  • Brembo rear brake pump
  • Ducabike adjustable CNC-machined footrests
  • Ducati Monster S4Rs Engine (999 Coppa Bassa)
  • Engine Tuning:
    • Aluminium TSS light flywheel, complete dismount and change of all bearings, bushings, shims, etc. Blueprinted remount.
    • Slipper clutch
    • 999 injector body
    • XTR high volume airbox
    • Walbro external fuel pump
    • Fuel pressure regulator
  • Electrics:
    • 998 racing wiring
    • ECU mapping
    • Separate electric devices wiring (rear and front lights, fan)
    • Lipo Battery
    • AviaCompositi dashboard with lap timer
    • Double LED rear light
    • Cagiva Mito 125 Lawson replica front light
  • RC Radiator (High capacity racing radiator)
  • Aluminium water tubes
  • Radiatior fan
  • Ducati 999 oil radiator
  • Ducati Monster 900 yokes
  • Ducati ST3 adjustable front fork
  • XTR CNC-machined clip-ons
  • Ducati ST3 front wheel
  • Brembo front brake calipers (4 pads)
  • EBC sinterized brake pads
  • Discacciati lightened floating front brake rotors (5mm thickness)
  • Frentubo kevlar brake lines
  • Ducati 1098 Front Brake Pump With Xtr Foldable And Regulable Lever
  • Ducati 1098 Clutch Pump With Xtr Foldable And Regulable Lever
  • Frentubo Kevlar Clutch Line
  • XTR Aluminium front fairing bracket
  • Sil Motor Roche Replica carbon fiber silencers with Spagheti exhaust system modified to fit 999 Coppa Bassa engine
  • JT lightened Z14 sprocket, 520
  • PBR Z 37 rear sprocket, 520
  • Regina Gold 520 chain
  • Modified Ducati Diavel sprocket cover
  • DNA oil pressure air filter
  • Ducati 888 rear solo seat
  • XTR handmade seat and upholstery
  • XTR / Ducati 851 fiberglass fuel tank with quick-open double gas fillers and transparent fuel level
  • Ducati 851 fairing modified to mount the endurance front light
  • Ducati 851 windshield
  • XTR Aluminium fairing brackets
  • Ducati 1098 front mudguard
  • Domino quick-turn throttle
  • Domino Soft Grips
  • Continental Tires 120/70 – 17 and 180/55 – 17 Race Attack 2
  • Artenruta Painting: Tribute to the first Ducati 851 Tricolore
  • Powder Coating: chrome colour frame
  • Dry Weight (no fuel) with water, battery, oil, hydraulic fluid, and air in the tires: 165 Kg, 800 grams

Detail Shots

 

Follow the Builder

XTR Pepo:  Blog | Facebook | Instagram | Twitter | Web
Pictures by Sergio Cardeña

More XTR Pepo Builds


Ducati Tricolore Custom XTR Pepo: Ducati 999 Tricolore - In 1988, Ducati unleashed the Desmoquattro 851 engine, the first desmodromic twin with liquid-cooling, four valves per cylinder, and electronic fuel injection. The engine found its way into one of the iconic sports bikes of […]
Ducati Scrambler Street Tracker XTR Xpress: “Makoki” Ducati Scrambler Street Tracker - 70s-inspired Ducati 800 Street Tracker by XTR Pepo…  Introduced in 2015, the Ducati Scrambler was a bit of a misnomer, as it had a few of the trimmings of a proper scrambler beyond the name. […]
BMW R18 CAFE RACER Best of MBE ’23: BMW R 18 Custom - Best of MBE: 911MX Factory x XTR Pepo’s R 18 BMW…  When the BMW Motorrad launched the R 18 in 2020, we can’t say we were all that enthused. Yes, it’s powered by the largest […]
Royal Enfield Continental GT 650 Racer Black Fury: Royal Enfield Continental GT 650 - XTR Pepo transforms an Enfield into an endurance-style racer…  Pepo Rosell of Spain’s XTR Pepo built his reputation customizing Italian superbikes under his brand Radical Ducati. After closing that workshop several years ago and taking […]
Ducati Pantah Cafe Racer La Guapísima: Ducati Pantah 600 Sprint Racer - XTR Pepo x Irons Cafe Racer = one hot Ducati drag racer…  At the 1979 Milan Motorcycle Show, Ducati unveiled the Pantah, the first Ducati to eschew the old bevel-gear OHC design in favor of […]
GT650 Endurance Racer She-Demon: Royal Enfield 650 Endurance Racer - “Lilith” — a Royal Enfield GT 650 from XTR Pepo… Pepo Rosell of Spain’s XTR Pepo remains one of the most well-respected builders in the business, a man who’s developed a signature style of street-legal […]
Honda XBR500 Cafe Racer Honda XBR500 “Imatra” by XTR Pepo - In 1985, Honda launched the XBR500 to compete with Yamaha’s 500cc big-single street bike, the SR500. At core, the SR was a street version of the company’s legendary XT500 enduro, which won the first two […]
SWM Cafe Racer Fire in Madrid: “Sport 440” Roadster by XTR Pepo - “My everyday bike for the Madrid Streets.” In 1971, a new Italian motorcycle manufacturer came onto the scene:  SV.VM (Sironi Vergani Vimercate Milano), better known as SWM Motorcycles. Based out of Milan, the company produced […]
Ducati 999 Custom Custom Ducati 999 “Paprika” by XTR Pepo - The Ducati 999, built from 2003-2006, boasted a liquid-cooled L-twin Desmodromic engine capable of 138 horsepower and 80 lb-ft of torque. While the 999’s styling — which was the work of South African designer Pierre […]
Ducati Monster 821 Cafe Racer “Pantah” Ducati Monster 821 Cafe Racer by XTR Pepo - The Ducati Pantah (“Panther”), introduced in 1979, heralded a whole new generation of modern Ducati V-twins, with belt-driven camshafts and trellis frames — features that remain Ducati hallmarks to this day. What’s more, the Pantah […]
Mash Five Hundred Tracker Mash Five Hundred Tracker by XTR Pepo - Mash Motorcycles is a French marque founded in 2014, which currently offers scooters and motorcycles in the 50cc, 125cc, 250cc, and 400cc class. The Mash Five Hundred is a fuel-injected, 400cc single that offers 28 […]
Ducati Monster 1200 R Custom Ducati Monster 1200 R Custom by XTR Pepo - “Il Padrino” — the Godfather of Ducati Monsters… Pepo Rosell, aka the “master constructor,” is the man behind Spain’s XTR Pepo, building some of the hottest, most trick motorcycle specials on the planet. In his […]
Harley Sportster Brat Tracker Harley-Davidson Sportster by XTR Pepo - Pepo Rosell of XTR Pepo continues to turn out stunning customs at a rate that defies belief, each strikingly unique yet bearing the signature, race-inspired style of the “master constructor.” One thing we haven’t seen […]
Honda Hornet Cafe Racer Honda Hornet Cafe Racer by XTR Pepo - A modern cafe racer inspired by the Honda CB500 Four… We’re not quite sure how Pepo Rosell of XTR Pepo turns out so many staggering builds, each unique but incomparably his own. Today, we’re thrilled […]
BMW R100RS Cafe Racer BMW Silver Bullet MK2 by XTR Pepo x Revival of the Machine - Updated:  The Silver Bullet becomes more racer, more XTR…more Pepo! Last year, we saw the launch of the 1978 BMW R100RS “Silver Bullet,” the first-ever motorcycle designed by Revival of the Machine — one of […]

Leave a Comment

Your email address will not be published. Required fields are marked *

*