Hello, this is Ikeda from Grumpy.
How do you prepare for punctures that might occur while cycling?
The most common type of puncture is when something pierces the tube, creating a hole.
Getting a puncture while out riding can be a real mood killer, and ideally, you don't want to have to repair it, right?
That's why we recommend the tubeless-ready setup, a standard customization at Grumpy.
This involves putting a liquid called sealant into the tire, which instantly plugs any holes where air might leak, thereby maintaining air pressure. Small holes in the tire, like those caused by glass shards or thumbtacks, are automatically sealed.
While this tubeless-ready setup is convenient, its effectiveness largely depends on the sealant used.
Why am I focusing on Muc-off among all the sealant products? There are reasons, of course.
One reason is that there are models specifically designed for different bicycle tires.

There are sealants tailored for road bikes with high tire pressure, MTBs with low pressure and high volume, and gravel bikes that combine elements of both.
Muc-off NO PUNCTURE HASSLE SEALANT 【ROAD & GRAVEL】
This is a sealant newly designed for the latest road tires.
It's a new model with the ability to instantly seal high-pressure, low-volume tires, characterized by its thin, watery consistency.
Recommended tires:
・Road/Gravel tires
・Tire width 40c or less, air pressure 50psi or more
・Recommended for high-pressure, low-volume tires.
Muc-off NO PUNCTURE HASSLE SEALANT 【Mountain】
Capacity: 80ml Price: 1,540 yen
Capacity: 140ml Price: 1,980 yen
Capacity: 1L Price: 6,930 yen
This is the classic Muc-off sealant. The packaging has changed slightly, but the contents are the same. It's the traditional viscous type.
Recommended for low-pressure, high-volume tires. With the new model specifically for ROAD & GRAVEL, it has now been split into two types.
Of course, it can still be used for road/gravel tires as before, but with the emergence of a new model specifically for road bikes, it's now naturally recommended for MTBs!
Recommended tires
・Road/Gravel/MTB tires
・Tire width 40c or more, air pressure 50psi or less
・Recommended for high-pressure, low-volume tires.
So, which one should you use for your bike? It's best to choose based on the tire width and air pressure mentioned above.
Gravel bikes can use either sealant, so if you prefer narrower tires, "ROAD&GRAVEL" is a safe bet, and if you prefer wider tires, "Mountain" is the way to go.
★Note that the two sealants have different contents, so do not mix them!
◆Reason number two: it's an "ammonia-free" sealant.
In short, the sealant does not contain ammonia. Some sealants contain ammonia to enhance performance.
However, ammonia can corrode metal, so if you're using aluminum rims or if it gets on the nipples, it can have an effect (it will look rusted).
Even if you try to be careful not to get it on those parts, sealant can still seep through gaps in the rim tape or spoke holes over time. Also, because sealant remains inside the tire for a long time, it inevitably affects metal parts.
What's amazing about Muc-off sealant is that it achieves its performance without using ammonia!
It's gentle on your wheels, allowing you to use it with peace of mind for a long time.
◆Reason number three: it "smells good."

Sealant is a liquid made from various raw materials. It naturally contains things that are not food. Therefore, any sealant will have a unique chemical scent.
It's okay if you only smell it for a moment, but if you have to smell it constantly while refilling sealant or when it spills, it can be quite unpleasant.
However, Muc-off sealant has a scent like "sweet candy" that you might remember from childhood.
Although scent preferences vary by individual, it's a scent that is still tolerable even if you have to smell it continuously during work.
If you visit the store, you can experience the scent, so if you're curious before purchasing, please do.
◆Reason number four: the "small capacity sizes" available.

Muc-off sealant comes in various capacities.
You can choose from four capacities: 80ml, 140ml, 500ml, and 1L, depending on your needs.
If your bicycle tires are narrow, you won't need a large amount of sealant, so you might just want a little. If you want to try Muc-off sealant, the small size is perfect!
It caters to various needs, such as wanting to share sealant with friends or wanting to stock up because your bike has a tubeless-ready setup.
By the way, here are the recommended sealant amounts for each tire width. Please use this as a reference when purchasing.
・700x23-25c: 40-50ml
・700x28c: 50-60ml
・700x30-45c: 70-80ml
・26 or 27.5 inch MTB: 60-70ml
・29 inch MTB: 105-140ml
◆Reason number five: it's "environmentally friendly."
