Maintenance
Service intervals, fluids, brakes, chains, tires and seasonal preparation for Portugal.
Blog · Workshop knowledge
Workshop notes for
real riders.
Useful articles from the Iron Custom Motors bench: maintenance, diagnostics, parts choices, upgrades, pre-purchase checks and the small details that keep motorcycles honest.
Published 29 June 2026
We Found the Wrong Fork Oil in a Brand-New Royal Enfield Bear 650
We opened the Showa fork on a new Royal Enfield Bear 650 and found one leg badly underfilled with dark, worn oil. Here's what we learned.
Read the guide →Published 24 June 2026
Motorcycle Tyre Fitting: Why It Needs a Specialist
Motorcycle tyre fitting is not car tyre fitting. Correct mounting, balancing and inspection change grip, stability and rider confidence.
Read the guide →Published 18 June 2026
Front Fork Service: Control Starts at the Front
Why front fork service matters: seals, bushings, clean parts, correct fork oil viscosity and precise oil level for safer handling.
Read the guide →Published 17 June 2026
Motorcycle Brake Pad Replacement: What Riders Should Know
Brake pads are more than a wear part. Learn how pad condition affects braking feel, safety, discs, ABS and riding confidence.
Read the guide →Published 17 June 2026
RevTech 110 Oil Service: Engine, Gearbox & Final Drive
Why oil service matters on RevTech 110 and similar V-twin engines: engine, gearbox and drive lubrication explained by Iron Custom Motors.
Read the guide →
What will live here
Practical articles, not noise.
The blog is for useful, searchable material: what riders ask us in the workshop, what we check before buying a bike, how we choose parts, and why some jobs should be done before they become expensive.
Diagnostics
How symptoms turn into real causes: electrical, engine, suspension and running issues.
Parts & upgrades
OEM, aftermarket and tuning choices explained from a workshop point of view.
Buying used
What to inspect before buying a motorcycle and when a cheap bike becomes expensive.
Workshop life
Stories from the bench, project decisions and the culture behind Iron Custom Motors.
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Send your motorcycle model and question via WhatsApp. If it needs a proper check, we will tell you the next step.