1. At a Glance – The Muffler Maker That Suddenly Made Some Noise
Ladies and gentlemen, this is Munjal Auto Industries Ltd — the company that makes the exhaust systems for your bike, the rims for your wheels, and possibly the seat structure you’re sitting on while complaining about petrol prices.
For years, this stock has behaved like that dependable cousin who never makes headlines. But Q3 FY26 just delivered a 757% jump in quarterly profit. Either something dramatic happened… or last year was so bad that this year just looks heroic.
With Hero MotoCorp contributing over 90% of revenue, this is not diversification — this is devotion.
So the question is simple:
Is this a steady industrial workhorse quietly compounding?
Or a margin-sensitive supplier one bad order away from wheezing?
Let’s pop the hood.
2. Introduction – The Hero Group’s Silent Engineer
If the Hero Group is a Bollywood blockbuster, Munjal Auto is the guy handling sound engineering backstage.
Incorporated in 1985, Munjal Auto Industries Ltd (MAIL) manufactures sheet metal components, exhaust systems, fuel tanks, wheel rims, BIW assemblies, and composite products. It also has a subsidiary — Indutch Composites Technology Pvt. Ltd. — with an order book of ~₹660 crore for FY24.
That sounds impressive.
But here’s the twist:
Over 90% of revenue comes from Hero MotoCorp.
That’s not customer concentration.
That’s customer dependency.
The company operates manufacturing units at Vadodara, Bawal, Dharuhera, and Haridwar, serving automotive, renewable energy, aerospace, defense, and railways.
On paper, it’s diversified.
In reality, it’s emotionally committed to Hero.
So when Hero breathes, Munjal inhales.
When Hero sneezes, Munjal catches cold.
But Q3 FY26 suggests the cough may be clearing.
Now the real question —
Is this operational improvement sustainable?
Or was last year just embarrassingly weak?
Let’s decode.
3. Business Model – WTF Do They Even Do?
Imagine you’re building a bike.
You need:
- Exhaust system
- Fuel tank
- Wheel rims
- Seat structure
- BIW assemblies
- Sheet metal parts
Now imagine outsourcing half of that to one vendor.
That vendor is Munjal Auto.
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