1989 Specialized Stumpjumper — A Rivendell-Inspired Rebuild

Some bikes make sense on paper. This one probably doesn’t.

It started with a bike I had been looking for for years: a late-eighties Specialized Stumpjumper in the black, pink and yellow colourway. I had tried buying examples in America, offered people more than they were asking, and somehow never managed to land the right one.

Then one appeared at Brick Lane Bikes in London.

There was only one problem.

It was a 60cm frame.

And I’m 5'9½".

Buying the wrong size bike

By any conventional bike-fit logic, I probably should have walked away.

A 60cm late-eighties mountain bike is enormous for someone my height. The top tube is long, the front end is tall and, set up as Specialized intended, it would have been far too stretched for me.

But there are bikes you buy because they fit perfectly and bikes you buy because you’ve wanted them for long enough that you’re prepared to work the rest out later.

This was definitely the latter.

I paid a pretty penny for it and rode it home from Brick Lane knowing fairly quickly that I wasn't going to restore it to catalogue specification.

The frame was going to stay. The original paint was going to stay. But almost everything else was up for negotiation.

Not a restoration

There is an understandable temptation with an old Stumpjumper to chase originality.

Find the correct Shimano groupset. Source the right stem. Find period grips. Recreate whatever appeared in the catalogue in 1989.

That wasn’t really what interested me here.

The bike already had nearly four decades of scratches, chips and scars. There is a dent in the top tube. The black paint has worn through in places and some of the original graphics have seen better days.

Trying to turn it into a pristine museum piece would have meant erasing much of what made the bike interesting in the first place.

So instead, I stripped it down completely.

The bottom bracket came apart and was rebuilt. The frame was treated internally against corrosion. A new headset went in. The paint was carefully T-Cut and polished to bring back as much depth as possible without disguising its age.

Then I did something slightly less orthodox.

Some of the deeper chips were picked out with gold.

Not restored. Not hidden.

Highlighted.

It exaggerates the fact that this is an old, used mountain bike rather than pretending otherwise, and against the black, pink and yellow paint it somehow works.

Solving a 60cm Stumpjumper

The key to the entire build was the handlebar.

I fitted a Nitto × Rivendell Bosco Bullmoose.

It is probably the component that makes the least sense to a traditional mountain-bike purist and the most sense once you actually ride the thing.

The huge rearward sweep pulls the controls dramatically back towards the rider, effectively undoing a lot of the excessive reach created by the large frame. Instead of feeling like I'm hanging off the front of an oversized 1989 XC bike, the riding position becomes upright, relaxed and almost Rivendell-like.

That became the direction for everything else.

This wasn't going to be an old mountain bike pretending to be new. It was going to be an old mountain bike reinterpreted as the kind of bike I actually enjoy riding now.

Something for woodland paths, towpaths, errands and long meandering rides where outright speed is fairly low on the list of priorities.

Friction shifting and unnecessary details

Once you start down this particular rabbit hole, there is very little reason to stop halfway.

The shifting is now handled by Dia-Compe bar-end shifters, keeping things simple and tactile. The rear derailleur was upgraded to Shimano XTR, while the triple Shimano Biopace crankset remains.

There is something particularly satisfying about retaining a triple crankset on a build like this.

Modernising it to 1x would have been easy. It might even have made it cleaner. But the enormous silver chainset is so visually representative of the period that removing it felt like losing too much of the original bike.

The cables were replaced throughout with new Nissen inners and outers, including purple housing that ties into the original graphics.

The brakes are brand-new Dia-Compe cantilevers, with a Paul Components cantilever hanger up front and additional Dango Bros hardware. Even the bolts received attention, with colour-coded Pro-Bolt hardware dotted around the bike.

None of those details individually transform how the bike rides.

Collectively, though, they are what make the build feel finished.

The bits that absolutely weren't necessary

This is probably where the project stopped being economically sensible.

There are oversized bottle cages in pink and yellow.

The pedals are gold MKS × Blue Lug specials.

There is a Velo Orange saddle.

The chainstay has been wrapped in Newbaum cloth tape.

There are small anodised details everywhere.

Even the brake hardware ends up contributing colour.

And sitting underneath everything is a set of Ultradynamico CAVA tyres, black with tan sidewalls.

They're exactly the sort of tyre this bike needed visually, but more importantly they help complete the transformation from vintage mountain bike into something closer to an all-terrain road bike.

Or an ATB.

Or whatever we're calling these things now.

Leaving the scars

The easiest way to make an old bicycle photograph well is probably to repaint it.

But I increasingly find myself drawn to bikes where you can still see what happened before they came into my hands.

This Stumpjumper has a lot of that.

There are scratches across the fork. Wear around the head tube. Chips through the top-tube graphics. Marks across the frame.

And, most significantly, there is a dent in the top tube.

None of it has been disguised.

The mechanical parts of the bike have been rebuilt and refreshed, but cosmetically it remains unmistakably the old frame I collected from Brick Lane.

The contrast is what I like most about it: fresh cables, beautiful new components and polished alloy sitting against a frame that looks every one of its years.

So does a 60cm bike fit someone who is 5'9½"?

Technically, probably not.

And I certainly wouldn't recommend going out and buying a 60cm vintage mountain bike on the basis that it will fit everyone my height.

But bicycle fit becomes a lot more interesting once you stop treating the frame size as the only variable.

With the saddle low and the enormous backsweep of the Bosco Bullmoose bars, I can ride this comfortably. The setup completely changes the relationship between the rider and the frame.

It also produces something I find much more enjoyable than trying to recreate the stretched-out position these bikes were often ridden with originally.

The frame is still huge.

It just no longer feels quite so huge.

The finished bike

The final build is difficult to categorise.

It isn't a restoration.

It isn't really a restomod either.

There isn't enough modern technology on it for that.

It's probably best described as my interpretation of what might happen if a 1989 Specialized Stumpjumper wandered into Rivendell, took a detour through Blue Lug and emerged nearly forty years later having decided it wasn't particularly interested in being a mountain bike anymore.

And that's probably why I like it.

The Stumpjumper underneath hasn't disappeared. The paint, Biopace crankset, proportions and scars are all still there.

But the bike around them has changed completely.

It is upright, slightly eccentric, overly detailed and far more useful to me than a faithful catalogue restoration would ever have been.

Sometimes preserving an old bike doesn't have to mean putting it back exactly as it was.

Sometimes it means finding another reason to keep riding it.