Stolen Sumo Sprocket (2025 Review)

If you’re looking for a budget-friendly BMX sprocket that delivers legit strength and style, the Stolen Sumo sprocket is a killer option that deserves your attention.

This one gives you real performance for the money.

You get solid 6061 aluminum construction, a clean design, and the flexibility to ride it with or without a guard, depending on your style.

Whether you’re smashing ledges daily or cruising smooth park lines, the Sumo sprocket has the toughness and versatility to match your riding.

Add in the color choices, two sizes, and an affordable price point – and you’ve got one of the best value sprockets on the market right now.

Let’s further investigate if this sprocket lives up to the hype.

Stolen Sumo Sprocket Review

1. Features & Build Quality

CNC machined from thick 6061 aluminum, the Sumo sprocket is simple, tough, and made to last.

It includes adapters for both 19mm and 22mm spindles, making it compatible with most 3-piece cranks.

And if you happen to run a 24mm crank spindle, then just install the sprocket without any spacers.

There are two versions available:

Sumo Sprocket Without Guard (Sumo III)

• Super clean look and lightweight.
• Compatible with the Stolen Thermalite sprocket guard if you want to add protection later.
• Great option if you’re into raw sprocket setups or ride smoother terrain.

Sumo Sprocket With Guard

• Includes Stolen’s Thermalite guard, made from their proprietary nylon material. (Just like their Thermalite pedals.)
• The sprocket and guard fit together seamlessly, so the force is evenly distributed across both.
• Held together with durable chainring bolts (just like the ones used on mountain and road bikes).
• Ideal for heavy street riders who frequently hit ledges and rails.

I’ve ridden both sprockets with integrated aluminum guards and nylon ones.

I must say that I prefer nylones guards more.

Why?

If you slip on a rail, landing on an aluminum sprocket will stop you, which can have consequences.

But you might roll out and “land” the trick with a plastic one because it continues to slide. This is especially helpful with crooked grinds.

Note: The Odyssey Utility Pro sprocket is another excellent solution you can run with or without the guard.

2. Stolen Sumo Sprocket Geometry & Specs

Sumo III Sprocket (No Guard)

• Material: 6061 Alloy
• Thickness: 6mm
• Bore: 15/16″ (24mm)
• Includes 19mm & 22mm spindle adapters
• Weight: 2.3 oz (25T), 3.3 oz (28T)
• Color: Black, Red, Polished, Blue, White
• Price: $29.99

Sumo Guard Sprocket

• Material: 6061 Alloy + Thermalite Guard
• Thickness: 6mm
• Bore: 15/16″ (24mm)
• Includes 19mm & 22mm spindle adapters
• Weight: 5.1 oz (25T)
• Color: Black, Polished, Black w/ Tie-Dye Guard
• Price: $39.99

Note: If you purchase the Sumo guard separately, it costs $14.99.

3. Why Choose The Stolen Sumo Sprocket?

Whether you’re a park rider who loves a clean setup or a street rider grinding rails daily, the Sumo delivers either way.

The guard version offers peace of mind when it comes to chain protection, and the smooth profile helps avoid snags.

What makes this sprocket even more appealing is the price.

For $29.99 – $39.99, you’re getting CNC-quality gear with options tailored to your riding style.

If you’re not ready to commit to a guard, you can always start with the Sumo III and upgrade with the Thermalite guard later.

That flexibility alone makes this sprocket a smart investment.

4. Real Rider Feedback

• Carlos M.: “Been running the 25T Sumo with the guard for 6 months now – zero issues. I bash this thing a lot, and it’s still going strong.”
• Tyler F.: “I originally bought it without the guard but added one later. It’s cool that you can upgrade like that without buying a whole new sprocket.”
• Jules A.: “Super lightweight and clean. Got the polished one and it pops. No flex even when cranking hard.”
• Mike R.: “I’m a peg rider and grind a lot, so the guard version is a must. It saved my chain countless times.”
• Erika S.: “Perfect size and weight. I’m using the 28T on my trail build and loving the look and function.”

Conclusion: Should You Get The Stolen Sumo Sprocket?

The Stolen Sumo sprocket proves you don’t need to overspend to get performance and protection.

Lightweight, strong, and available in multiple colors and styles, it’s a great addition to any setup.

• If you’re a street shredder, go with the guard sprocket version and protect your chain.
• If you prefer a cleaner look or ride smoother terrain, the Sumo III is perfect.

Either way, you’re getting a sprocket that’s built to last – and one that won’t break your wallet.

Recommended!

Further reading:

• What BMX sprocket size is best?
• BMX sprocket maintenance tips
• Best 28T BMX sprockets
• Best 25T BMX sprockets