Boom Vader 125cc Chain Size – FAQ

428H-108 OEM

After a couple of Grom Clone motorcycle discussions, I noticed that the Boom Vader stock motorcycle chain strength is questionable after performance upgrades. Very few people knew what the stock chain size is.

I ordered a longer chain than 108 links since I upgraded the front sprocket to a 17-tooth and had a chain breaker, and I could tailor the chain length to my Grom Clone’s needs.

If you are looking for an exact chain size to replace your stock chain, a link for link replacement, then 428H-108 is what you are looking for.

Picture of me, as a New Motorcyclist.
Just Me…Newly Licensed.

Hi I’m Tom, A New Motorcycle Rider and Blog Author.

I am a new rider(Pa Learners Permit at the end of 2020, and I received a Pa Motorcycle License in 2021 after passing a Motorcycle Safety Course).

I bought my first motorcycle, a TaoTao TBR7, at the beginning of 2021 and have been doing upgrades on that motorcycle since.

I added to my motorcycle collection by buying a Boom Vader Gen 2 in 2022, and that Grom-Clone motorcycle has been upgraded by me as well.

I continue to ride my Boom Vader Gen 2 motorcycle as well as my TaoTao TBR7 dual-sport bike.

Read more on my About Me page.

Fun Fact: I’ve only been on one group ride.

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