01
01 — Scheduled service.
Triumph interval service: oil, filter, fluids, brake check, chain and sprocket inspection (or shaft-drive check on Rocket 3 / Trophy), plus model-specific items. From €150, consumables included.
Triumph · Cascais / Greater Lisbon
Triumph service
in Cascais.
Independent Triumph workshop — diagnostics, scheduled service, valve-clearance, throttle-body balancing, charging-system repair, suspension, ECU tuning and custom builds for Bonneville, Speed Twin, Scrambler, Street Triple, Speed Triple, Trident, Tiger, Daytona, Rocket 3, Speed 400 and the classics.
Why bring your Triumph to us
British character, independent rates.
Iron Custom Motors is an independent Triumph specialist in Cascais. Modern Triumph is one of the most engineering-led marques on the road — the inline-triples that define the Street Triple, Speed Triple, Trident and Tiger; the modern-classic parallel-twins under every Bonneville, Speed Twin and Scrambler; the 2458cc triple of the Rocket 3. They are well-built, characterful bikes — but they reward people who actually understand the platform rather than a shop that happens to take Triumphs in alongside everything else.
The engineering culture here didn't come from nowhere. This is the team behind AMD World Championship custom builds, a Bonneville land-speed record, and the BMW Motorrad Customizing Championship 2023. We don't list that to wave trophies — we list it because the same standard of measurement, tolerance and finish is what now goes into a routine Street Triple valve check or a high-mileage Bonneville charging repair.
There's a second reason Triumph and this workshop fit together. The Triumph modern classics — Bonneville, Scrambler, Thruxton, Bobber, Speed Twin — are one of the world's biggest bases for café racers, scramblers and bespoke builds. That is exactly our craft. Service and custom live under the same roof here, so the bike you service with us is the same bike we can build into something of your own.
Independent means no dealer mark-up, freedom to fit OEM or quality aftermarket parts as the job actually requires, and direct communication with the person doing the work. Written estimate before anything happens, written report after.
Specialist tooling
Triumph-specific diagnostic and tools.
Dealer-level Triumph diagnostic access plus the platform-specific tooling most independent workshops simply don't keep — including TuneECU, the tool the Triumph independent world has relied on for years.
Dealer-grade Triumph diagnostics
Reads and clears Triumph-specific fault codes, monitors live sensor data, runs service resets and checks the system under load. Modern Keihin/Continental-ECU Triumphs need this depth of access — a generic OBD reader doesn't see the bike.
TuneECU — ECU diagnostics & remap
The well-known tool for ECU work on the older Keihin-ECU Triumphs (e.g. older Bonneville, Street Triple, Tiger). We use it for fault reading, throttle-body balancing, map flashing and the remaps that cure snatchy low-rpm fuelling on early ride-by-wire bikes.
Throttle-body balancing
Vacuum balancing across the triples and parallel-twins — the single biggest contributor to a smooth idle and clean throttle on these engines.
Valve & shim tooling
Proper shim-selection tooling for the twin and triple valve trains, so a clearance job is measured and corrected to spec — not estimated.
What we do on Triumph
Service. Repair. Tune. Build.
From a routine oil-and-filter to a valve-clearance service, an ECU remap, or a ground-up Bonneville café racer — all of it done with Triumph-specific knowledge.
02
02 — Valve-clearance — twin & triple.
Shim-checked and corrected to spec. Parallel-twin Bonneville/Speed Twin/Scrambler and the inline-triple Street Triple/Speed Triple/Trident/Tiger/Daytona.
03
03 — Throttle-body balancing.
Vacuum balance on triples and twins for a clean idle and smooth fuelling — done with the bike at proper temperature.
04
04 — Charging & electrical.
Regulator/rectifier and stator diagnosis, battery and charging-circuit testing, fault-code reading and accessory wiring. The check that matters most on higher-mileage and older Triumphs.
05
05 — Suspension service.
Fork seal replacement, oil change, cartridge and shock rebuild, sag and damping setup — Scrambler 1200 long-travel, Tiger adventure, Speed Triple sport and the modern-classic chassis. While the wheels are out, tyre fitting and balancing is done in the same visit.
06
06 — ECU remap & tuning.
TuneECU work on the older Keihin bikes and dealer-grade tuning elsewhere — fuelling correction after an exhaust, and the remap that fixes snatchy throttle on early ride-by-wire models.
07
07 — Clutch & drivetrain.
Clutch inspection and replacement, cush-drive check, chain and sprocket renewal — or final-drive service on the shaft-drive Rocket 3 and Trophy.
08
08 — Custom & restoration.
Café racer, scrambler and bobber builds from a Bonneville or Speed Twin base, plus restoration of carb and early-EFI classics. See Custom & special projects and Upgrades & tuning.
Typical issues we know
Triumph patterns, checked before they bite.
Years on these bikes mean we know where they get tired. We check the high-risk items first — not after they leave you stranded on the way to Sintra.
Valve-clearance drift on triples & twins.
We measure at interval and adjust by shim selection — properly, when it's actually due, not on a guess.
Throttle-body balance out.
A lumpy idle or buzzy throttle on a triple or twin is very often a balance that's drifted. We re-balance it instead of chasing ghosts.
Snatchy low-rpm throttle on early ride-by-wire.
A known trait on some early ride-by-wire Bonnevilles and Tigers. Often genuinely improved with a remap — we do it via TuneECU on the eligible bikes.
Regulator/rectifier & charging on higher-mileage bikes.
Load-tested cold and hot before it cooks the battery and stator — the check that matters on older and high-mileage Triumphs.
Sprag (starter) clutch wear on the older air-cooled 865.
A known weak spot on the older air-cooled 865 Bonneville/Thruxton/Scrambler. We diagnose the symptom correctly rather than throwing parts at it.
Clutch & cush-drive wear.
Measured against spec — especially on hard-ridden triples and high-mileage modern classics.
Models we service
Across the Triumph lineup.
Current production, recent past, modern classics and older bikes — if it wears the Triumph badge, bring it in.
Modern classics (parallel twin)
Bonneville T100 / T120, Speed Twin 900 / 1200, Scrambler 900, Scrambler 1200 X / XE, Thruxton, Bobber, Speedmaster.
Roadsters (triple)
Trident 660, Street Triple 660 / 765 (R / RS / Moto2), Speed Triple 1200 RS / RR, and the older Speed Triple 1050.
Adventure (triple)
Tiger Sport 660, Tiger 850 Sport, Tiger 900 GT / Rally, Tiger 1200 GT / Rally Explorer, plus the older Tiger 800 and Tiger Explorer 1200.
Sport
Daytona 660, and the older Daytona 675 / 765 (Moto2).
Power cruiser
Rocket 3 R / GT — 2458cc triple, shaft drive.
Small platform (single) & classics
Speed 400, Scrambler 400 X — plus carb and early-EFI Bonnevilles, older triples and restoration projects, all welcome.
Parts and accessories
Catalog access for major Triumph parts.
We source through OEM Triumph and the major international aftermarket catalogs. Whatever your bike needs — OEM, performance, modern-classic style or touring — we order it directly through trusted suppliers.
Catalogs we work with: OEM Triumph parts via distributor network · Arrow · Zard · Vance & Hines · Öhlins · Nitron · K-Tech · British Customs · LSL · K&N · Renthal · DID · Mitas · Avon. Order ahead even if you're not booking service. See Parts & consumables.
FAQ
Common questions. (FAQ)
Are you an authorised Triumph dealer?
No — Iron Custom Motors is an independent Triumph workshop. The advantage is no dealer mark-up and freedom to use OEM or quality aftermarket parts. Recall and in-warranty work itself must go through an authorised Triumph dealer, but everything else — scheduled service, repair, valve and throttle work, remaps, modifications — we handle at independent rates and with deeper, Triumph-first attention.
How much does a Triumph service cost?
Scheduled maintenance starts from €150, consumables included (air-filter replacement is charged separately). A valve-clearance check is from €250 on a parallel-twin (Bonneville / Speed Twin / Scrambler) and check-and-adjust from €300; the inline-triples (Street Triple, Speed Triple, Trident, Tiger, Daytona, Rocket 3) are quoted per model in a written estimate. Hourly work is €50/hour. You always get a written estimate before any work starts. Prices from, taxes included.
Do you do valve / shim service on Triumphs?
Yes — on both the parallel-twins and the inline-triples. We measure clearances and correct them by shim selection to spec, then re-balance the throttle bodies so the bike runs the way it should afterwards.
Can you remap my Triumph or fix the snatchy throttle?
Yes. On the older Keihin-ECU bikes we use TuneECU for diagnostics and remapping — including the remap that smooths out snatchy low-rpm fuelling on early ride-by-wire Bonnevilles and Tigers. On newer bikes we tune with dealer-grade access, including fuelling correction after an exhaust fitment.
Can you build a custom café racer or scrambler from my Bonneville?
Yes — this is core to what we do. The Bonneville, Speed Twin and Scrambler are among the best bases in the world for café racer, scrambler and bobber builds, and our team has the championship-level fabrication to do it. Start at Custom & special projects.
Can you import OEM or aftermarket Triumph parts to Portugal?
Yes — we have catalog access to OEM Triumph parts via the distributor network plus all the major aftermarket catalogs (Arrow, Öhlins, British Customs and more). If a part exists for your model, we source it to Cascais.
Related workshop paths
Continue through the same service system.
These pages connect the most common next steps: service, parts, upgrades, pricing, brand-specific help and the rider lounge.
Local service area
Serving Cascais, Lisbon and Greater Lisbon.
Iron Custom Motors is based in São Domingos de Rana, Cascais. We work with riders from Cascais, Estoril, Oeiras, Sintra, Lisbon and the wider Greater Lisbon area.
Cascais workshop
A real workshop and client lounge, not a remote parts counter. Book service, drop off the bike, or visit to discuss a project.
Multilingual process
English, Russian, Ukrainian and Portuguese communication with written estimates and clear next steps.
One accountable path
Diagnostics, parts sourcing, installation, upgrades and follow-up happen under one workshop standard.
Ready when you are
Bring your Triumph in.
Send the model, year and a short description via WhatsApp. We'll come back with the closest available slot and a written estimate before work starts. Tue–Sat, 10:00–18:00.