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Description
The 8-Bit Chainbreaker + Utility Knife Multi-Tool has four functions. It has a chainbreaker on one end and a
retractable utility blade on the other. The chain tool is operated by an included 3mm hex L key that doubles as a
tire plug inserter. A machined slot fits the L key and converts the entire multi-tool into a tire plug inserter,
with the forked end of the L key extending outward. The handles of this multi-tool slide open to provide storage for
tire plug inserts, a valve core, and a spare mini utility blade. The fourth function of the tool is the 16mm head of
the chainbreaker end that can be used to tighten crankarms on the road or trail.
This multi-tool is designed to work on its own or be grouped with other 8-Bit System multi-tools. All three
multi-tools nest together via magnets and clever machining. These were designed to solve most trailside fixes to get
you back to the trailhead or next town. They are strong, versatile, lightweight, and small enough to fit in a jersey
pocket or riding tool wrap.
In this "how-to" video learn to:
use the blade
replace the blade
use the chainbreaker
use the tire plugger
stack the tools
Compatibility
Presta valve core can not exceed 25.4mm in length (Presta valve core not included)
The end of the chainbreaker functions as a 16mm hex wrench which is used on some crank arms. The torque limit
for the 16mm wrench is 10Nm.
Product Images Disclaimer Product images are for reference only and may not reflect the exact specifications, color, or components of the item offered for sale. Please refer to the product description and specifications for the most accurate details. If you have questions before purchasing, contact us and we’ll be happy to confirm.
Why Shop with AMG Cyclery?
Questions before or after purchase? You’ll talk to knowledgeable riders who genuinely care about your experience.
We’re a small, family-run bike shop where every order matters and customer service actually means something.
Spend $100 or more and your order ships free.
Some oversized or overweight products may be excluded from this offer.*
Not the right fit? Return unused items within 30 days for a smooth, straightforward return.
ABOUT US
Who We Are
Born from a lifelong passion for all things bikes, AMG Cyclery is a small, family-run bike shop and community hub in Seaside, California. Founded by Alex and Alisa Gonzales, we believe cycling is for everyone — whether you’re chasing personal bests, heading out for a Sunday cruise, or just discovering two wheels for the first time. We build bikes that fit your style, service them with precision, and welcome every rider who walks through our doors. With a focus on community, craftsmanship, and riding culture, our shop has even been featured on The Radavist — a reflection of the unique bikes and vibrant energy you’ll find here.
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