Are you also wondering how BMX sprockets impact grind tricks?
When I started riding (20+ years ago), the massive sprockets caused lots of trouble, especially when it came to grinding tricks.
But that didn’t stop us!
Fast forward to today, the smaller sprockets come in EXTREMELY handy.
Hey, the smaller your sprocket, the less it sticks out, which means you’re less likely to smash it on a rail or ledge mid-grind.
The size of the sprocket isn’t too big of an issue when it comes to feeble and smith grinds.
However, things become challenging with double peg grinds and especially with crooked grinds, doing 180 variations, etc.
But more on that later.
Of course, it also matters how well the sprocket is built to ensure durability so you don’t bend it after a few sessions.
Okay, let’s dig deeper.
This post covers:
- BMX Sprocket size & grinding
- Durability & material of BMX sprockets
- Sprocket guard: extra protection for grinds
- BMX frame bottom bracket height & grind clearance
- BMX sprockets & grind trick progression
- Conclusion: pick a grind-friendly sprocket!
BMX Sprocket Size & Grinding
Small Sprockets (25T – 28T)
So, if you’re all about grinds, small sprockets are where it’s at.
Most street riders choose 25T or 28T sprockets because they make grinding easier.
Why?
Well, they have a lower profile, so there’s less of a chance of your sprocket smacking into something mid-grind.
Trust me, there’s nothing worse than hearing that ugly “clang” when your sprocket hits the rail instead of your pegs.
With a smaller sprocket, you’ve got one less thing to worry about.
If you’re really focused on street riding and grinding, a smaller sprocket is pretty much the way to go.
I dropped from 28T to 25T because I don’t need the extra speed, plus I have to worry less about hitting ledges and rails.
Larger Sprockets (30T & above)
Now, larger sprockets – 30T and up – are more traditional.
They were more common back in the day, and some riders still prefer them, especially if they’re more into speed than street tricks.
But the downside?
When it comes to grinding, bigger sprockets are just begging to get caught on something.
They stick out more, so if you’re not careful, you’re definitely gonna hit a ledge or rail.
But know that this doesn’t mean you cannot do all the grinds you can with a 25T sprocket.
Of course, you can, but the chances of bashing it are much higher.
Durability & Material Of BMX Sprockets
All modern BMX sprockets are made out of aluminum.
They’re super lightweight, so you’re not adding any extra bulk to your setup, but they’re also tough enough to handle the wear and tear from grinds and stalls.
It’s kind of the best of both worlds.
Moreover, the standard sprocket thickness is around 6mm.
But I currently run The Shadow Conspiracy’s Sabotage sprocket, which is 5mm thick, and it’s holding up very nicely.
Also, some sprockets thicken toward the center, which adds even more strength to the it.
In general, if you get a sprocket from a reputable BMX brand, you’re safe.
Sprocket Guard: Extra Protection For Grinds
Why You Need One For Grind-Heavy Riding
If you’re serious about grinding, a sprocket guard is almost a must.
Without one, your sprocket takes all the hits, which can lead to dents, chips, or even bending. Once your sprocket is damaged, it can mess with your chain, which nobody wants to deal with.
A guard provides an extra layer of protection, so your sprocket (and chain) stays in good shape even after heavy sessions.
Plus, it lets you be more fearless with your grinds since you’re not worried about wrecking your sprocket every time you hit a rail or ledge.
Plastic Vs. Metal Guards
You’ve got two main options for the guards: plastic or metal.
Plastic guards are lighter, which is great if you’re trying to keep your bike light and quick.
They can handle most hits but will wear down faster, especially if you’re grinding a ton. But you can replace them, which is a big plus since you don’t have to buy an entire sprocket.
One of the biggest advantages of a plastic guard is that even if you catch on it slightly, it won’t necessarily stop you, like the metal one will.
Metal guards, on the other hand, are like tanks. They’re heavier but way more durable, so they’ll last longer and take more abuse before showing any wear.
I rode both, the plastic and the metal guard sprocket, but I prefer the plastic one.
BMX Frame Bottom Bracket Height & Grind Clearance
The height of your frame’s bottom bracket plays a big role in the clearance you have for grind tricks.
Why Bottom Bracket Height Is Key For Grind Tricks
The higher your bottom bracket, the more clearance you get.
That means less chance of your sprocket slamming into whatever you’re grinding on.
It’s especially helpful when you’re doing technical tricks where things can get tight – like crooks.
With more clearance, you can focus on locking into the grind instead of worrying about your sprocket catching on the ledge or rail.
Impact On Bike Geometry & Feel
Now, the bottom bracket height also affects the overall geometry of your bike.
A higher bottom bracket might give you more room for grinds, but it can also make the back end feel snappier or more responsive.
Some riders love this because it makes the bike feel quicker when doing manuals or popping into tricks.
On the other hand, if you prefer a more stable, grounded feel, you might want a frame with a lower bottom bracket.
It’s all about balancing grind clearance and how you want your bike to feel.
Personally, I like that extra clearance – it makes grinding way less stressful.
BMX Sprockets & Grind Trick Progression
When working on more technical street tricks, having the right sprocket makes all the difference.
A smaller sprocket keeps things compact and controlled, so you can stay locked into the grind without interference.
A smaller sprocket lets you stay closer to the rail, giving you that tight, dialed-in feel you need for precision and better control.
Flickering the bike around is also easier, making those more technical tricks feel smoother and less clunky.
With a bigger sprocket, you’re more likely to catch on things, which can mess with your flow and make tricks feel harder to pull off.
Conclusion: Pick A Grind-Friendly Sprocket!
Sprocket size, material, your bike’s frame geometry, and whether or not you’re rocking a guard all play a huge role in how you approach grind tricks:
- Smaller sprockets give you extra clearance and control, which is crucial when you’re locking into grinds.
- A sprocket guard can be a lifesaver, keeping your setup from getting wrecked.
- Plus, a higher bottom bracket adds more clearance, so you have fewer things to worry about when riding street.
If you’re grinding a lot, go smaller (25T), keep it light, and maybe add that sprocket guard for some extra peace of mind.
You want your bike to work with you, not against you.
Further reading:
- Best 25T BMX sprockets
- Best 28T BMX sprockets
- Best Guard BMX sprockets
- BMX sprocket maintenance (6 tips!)