Magna40 Rim

Magna 40 Rim Mountain Bike Wheel 26" Rim Chromag Bikes
₩162,000 Sale Save
Size 26

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Worldwide shipping

We ship anywhere in the world with competitive rates from UPS and FedEx. Alternatively you can pickup right here at Chromag HQ.

Service Guide

Need more info on setup, service and spare parts?

Check out our user guides here.


All of our parts are backed by a 1 year warranty.
After that we still have your back with our crash replacement program.

Chromag rims are built on this foundation

key features

Let's get you rolling

Oriented Nipple Bed

The Phase30 and BA30 feature an oriented bed to help align the nipple seat with the angle of the spoke. This helps reduce stress on the nipple and spoke, thereby creating a stronger wheel.

Robust Beadwall

All our rims are all made from premium grade aluminium. They are extruded to our unique design and refined ERD (Effective rim diameter) for the best tire fit and hold.

The BA30, Phase30 and Ally have a robust beadwall to add increased dent resistance and tire retention.


The Phase30 and BA30 use 6069, this has a higher tensile and fatigue strength along with increased fracture toughness. It is also a bit more expensive.

The Ally uses 6061, whilst still a premium alloy it is slightly lower strength than 6069. As such more is used to compensate making the Ally slightly heavier.

Rim FAQ's

They both use our top end alloy with a fusion welded seam-ground join, and have a 30mm inner width.

The main difference is the BA30 has some extra internal bracing, making it stronger and a bit heavier.

If you're really on the fence, run a Phase on the front and BA on the rear.

The Phase and BA are fusion welded, and post ground which makes the join the strongest part of the rim!

The Ally is pinned at the joint, which is more simple and less labour intensive, but not as strong. The Ally is also slightly heavier as the alloy used has slightly less strength than that of the BA and Phase.

Wheels come pre-taped with tubeless valves installed.

All you need to do is install tires and sealant.

Our wheels are pre-stressed and ready to ride out of the box.

However, like all wheels there is a bedding-in period, so be sure to keep an eye on spoke tension after the first few rides.

Provided the rim does not have a crack, you can use an adjustable wrench to gently bend it back to help your tyres seat properly. Use a rag or an old inner tube to prevent scratching your rim, and be careful to avoid puncturing your rim tape!

You'll likely need to adjust spoke tension if your wheel has taken a hit hard enough to dent it.

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