Chainrings

Funn Solo narrow-wide chainrings are built for 1x MTB drivetrains — the alternating tooth profile keeps your chain seated over rough ground, with the Solo, Solo DS, Solo DX, Solo ES and Solo 96 covering different cranks and fitments. Pair yours with a Zippa chain guide for full security, and learn more in our chain retention guide.

What narrow-wide actually does

A chain alternates narrow and wide link openings; a narrow-wide ring alternates tooth thickness to match. Each tooth fills its link completely, so the chain cannot bounce sideways — the reason 1X drivetrains can drop the front derailleur entirely.

Find your fitment first

The ring must match your crankset, not your frame. The Solo fits any 104mm BCD four-bolt crank — including the Funn Ridge. The Solo 96 covers Shimano's asymmetric 96mm BCD cranks, while the Solo DS mounts directly to Shimano M9100, M8100, M7100 and M6100 cranks with no spider at all. SRAM riders take the Solo DX for three-bolt direct mount, with 3mm offset for Boost or 6mm for non-Boost.

Riding an e-bike?

The Solo ES is a one-piece AL7075 ring for Shimano EP8, E8000 and E7000 motors — 34T, 36T or 38T, with an adjustable 50mm or 53mm chain line.

Choosing a tooth count

Smaller rings (28–30T) make steep climbs easier; larger rings (34–36T) give more top-end for fast, flowing terrain. If you spin out rarely and walk climbs often, size down. Most Solo rings run 28T to 36T depending on fitment.

Belt and braces

Narrow-wide holds the chain; a Zippa guide makes sure. Racers and riders in rough terrain run both.