Built, not bought New build story every Thursday · Get it by email
Iron & Gasoline Follow
Top-down view over the handlebar of a black custom BMW K1100 with twin gauges, bar-end mirrors and a brown leather seat
Photos: Jakub Kulesza
Cafe Racer · Cafe Racer

Four workshops, one K1100

My first build: a blue 1993 K1100 RS bought running for 4,200 zloty just before the world shut down, dragged through four workshops in two cities, and finished five minutes from home. This is the long version, with the real numbers.

BMW 14 min read 31 August 2026 By Ludovic Verbeeck
Read the full story All builds
Fresh off the bench

Latest builds

All builds →
Pick your poison

Styles

Vintage hardtail Harley-Davidsons with springer forks parked in the rain at a motorcycle show
The long read

The truth about hardtails

They look incredible and they will destroy your spine. How to get the look and keep the travel.

Harley-Davidson8 min read12 June 2026
By donor

Brands

Every build, filed by what it started life as

All manufacturer names and logos shown are the trademarks of their respective owners. They are used here only to identify the donor motorcycle a build started from. Iron & Gasoline is not affiliated with, endorsed by, or sponsored by any of them.

No sponsors, no press bikes

We only write about things we have actually taken apart

Every guide here comes out of a real build, in a real garage, with real mistakes attached. If a part was rubbish we say so. If we got it wrong we go back and update the post.

Read the whole story
Mmmh... about that...

Common questions

Read the guides →
What is a cafe racer?

A road bike stripped for speed and shaped around one riding position: head down, elbows in, weight on your wrists. Clip-on or clubman bars, rearset pegs, a humped solo seat, and nothing on the bike that does not need to be there. The style came out of London in the late fifties, when riders raced between landmarks on bikes they had lightened themselves.

What is the difference between a brat and a cafe racer?

The seat and the riding position. A brat has a flat, straight, often two-up seat and upright bars, so you sit neutrally. A cafe racer has a humped solo seat with clip-on or clubman bars that put your weight forward onto your wrists. Brat style is named after Brat Style, the Tokyo workshop of Go Takamine.

What is the best first custom motorcycle build?

The Yamaha XS650 is still the friendliest, because parts support is extraordinary and the frame takes a rear loop without structural drama. But prices have roughly doubled in five years. A BMW K100 at around 2,500 zloty or a Suzuki GS500 at 2,200 is now better value, and the money saved buys tools you keep forever.

How much does a custom motorcycle build cost?

Our BMW K100 came to about 9,100 zloty over eleven months including the donor. A BMW R80 came to roughly 4,680 euro over eighteen months. Paint and powder coating is consistently the biggest single line, often more than the donor bike, and around 340 euro of consumables never appears in anyone's budget.

Do you build motorcycles for other people?

No. Iron and Gasoline is a publication, not a workshop for hire. Everything written about here has been owned, ridden or taken apart with our own hands, which is the whole point of the site.

Do you take sponsored posts or affiliate links?

No to both. There are no affiliate links anywhere on this site and no press bikes. If a part is recommended it is because it survived, and if it was rubbish the post says so.

Where can I follow the builds?

Every build has its full photo set on Instagram at @ironandgasolineofficial, and questions get answered there. A weekly email goes out on Thursdays with the latest build and one garage tip.

Thursdays, 07:00

One build.
One guide.
No noise.

A short email every Thursday. The week's build story, one thing worth knowing in the garage, and a part we'd actually buy again. That's it.

No spam, no partner mail, unsubscribe in one click. We keep your address and nothing else.

@ironandgasolineofficial

From the feed

Follow on Instagram → Photo: Farbart Photography
Rider in a leather jacket astride a BMW K-series brat on a Warsaw street A pack of custom motorcycles riding two abreast down a tree-lined road Rider waiting at the kerb on a BMW K-series brat tracker Two riders side by side in black and white outside a glass-fronted building Riders in tweed standing around a BMW K-series brat parked on the street Helmeted rider on a BMW brat pulling away past a Warszawa road sign