If you’re hesitating, you should buy it! The Suzuki oil-cooled engine transforms dramatically with the “Yoshimura ST-1 Cam.” Why not make your decision before the April price increase?

With just the ST-1 and a stock carb on the oil-cooled 1200, it really runs beautifully.

Forced-induction FCR/TMR carbs are overkill,
and for those who just want a slight boost over the current easy-to-manage stock carb setup, this is a fantastic part.
The power delivery is smooth from low to high RPM, and the tachometer and speed feel synchronized.
*With the standard cam, the engine spins but the bike doesn’t seem to accelerate as much.

By the way, we’re not trying to sell cams here.
We’ll do the work even if you bring your own parts.
If you’re hesitating now = you won’t buy it after the price increase, or you’ll regret it
I think.
Right now it’s March, the end of the fiscal year,
and starting in April of the new fiscal year, a terrifying wave of price increases could come at any time.
Should we give you a gentle push? Or a firm one?
Since it’s still 3/23, you have a little time to think.


Today’s Announcement (Custom Consultation)

Target: Suzuki oil-cooled engine owners (Inazuma, GSF, GSX-R, etc.).

Your Concern: “I want to install the Yoshimura ST-1 Camshaft someday, but it’s so expensive that I can’t make up my mind.”

Current Situation: Starting in April of the new fiscal year, major price revisions (increases) for parts from various manufacturers are predicted and announced (such as Ohlins’ maximum 57% price increase).

Decoboco’s Conclusion: Once you’ve experienced that explosive high-RPM power and responsiveness, you’ll never regret it. Rather than waiting for prices to go up and then thinking “I should have bought it then,” I strongly recommend **making your decision in March (last-minute purchase)**!

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株式会社ヒロチー商事 楽天市場店
¥2,556 (2026/09/20 10:33時点 | 楽天市場調べ)
株式会社ヒロチー商事 楽天市場店
¥5,618 (2026/09/20 10:33時点 | 楽天市場調べ)

Camshafts weren’t expensive parts (back then)

We really did swap them out and throw them away constantly.
I wish I’d kept some of those usable parts.


By the way, you’ll be shocked at Kawasaki cam prices .
It’s almost unbelievable…
250SB is 62,000 yen?
And the DLC is 220,000 yen
That’s incredible.

Look at this SUZUKI’s reasonable pricing!

Compared to the old days, prices have gone up but it’s still realistic.
Prices only go up, never down It’s a harsh world.

Time goes back to the 20th century…?

Reliable pricing with detailed specifications listed.
Paper materials like this are still invaluable.

This was right after the ZRX1100 was released.
It’s nice to see such a gentle lineup and price range.

YAMAHA and HONDA were also making aggressive moves.

That makes sense since about 30 years have passed.
On the flip side, the price increases have been relatively gentle.

Besides the cam, you’ll also need rocker arms and sliders

The cam and rocker arm are like a married couple, so it’s best to replace them together.
The cam chain slider on the front can be removed during cam replacement.
It’s good to replace that at the same time too.


Cam replacement isn’t a special job

Without some handy tools it can be a bit tedious, but basically it’s just a matter of replacing and adjusting.
The cam sprocket’s elongated hole is the only part that’s a bit annoying.

Just ask your local shop. Can you do cam replacements? That’s all.
If they say yes, just go ahead and buy it.
For an oil-cooled 1200, these three items. Or just keep the cam.


株式会社ヒロチー商事 楽天市場店
¥2,556 (2026/09/20 10:33時点 | 楽天市場調べ)
株式会社ヒロチー商事 楽天市場店
¥5,618 (2026/09/20 10:33時点 | 楽天市場調べ)
Should You Buy the Yoshimura ST-1 Cam Now? Advice for Agonizing Suzuki Owners.

Topic: The End of the Fiscal Year Price Hike Dilemma. Details: Many Suzuki (especially oil-cooled) owners are currently agonizing over whether to pull the trigger on the legendary Yoshimura ST-1 Camshaft before potential price increases in April. Verdict: As a mechanic who just installed this cam and experienced its explosive mid-to-high RPM power on a test ride, my advice is simple: If you are going to buy it eventually, buy it NOW in March . Don’t wait until prices go up and regret it. Decoboco is here to help you take the plunge!

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