MX Bikes is PiBoSo's motocross simulator, running on a scratch written physics engine with an automotive industry tyre model, chassis flex and terrain that deforms as you ride it. It arrived on Steam Early Access on October 7, 2019 and still ships with no AI opponents and no career mode, which leaves online servers and hotlapping as the whole game. Five MSM bikes and a short official track list come in the box; everything beyond that comes from the modding community.
Your choice of equipment defines your damage output and playstyle. This guide ranks every major option, explains what makes each one strong, and tells you which builds they pair best with.
Equipment Rankings
| Equipment | Tier | Best For | Notes |
|---|---|---|---|
| MSM 250XF | S | New riders learning throttle control, and MX2 style racing on tighter layouts. | The 250cc four stroke, rated around 31 kW. |
| MSM 350XF | A | Riders who have outgrown the 250XF but find the 450XF unsettling on corner exit. | A 350cc four stroke at roughly 37 kW sitting between the 250 and the 450. |
| MSM 450XF | A | Experienced riders on open outdoor tracks where the extra power actually converts into lap time. | The 450cc four stroke at about 40 kW and the fastest bike in the default lineup. |
| MSM 250X | B | Riders after the two stroke challenge, and rhythm sections that reward carrying revs. | The 250cc two stroke at around 36 kW, with a narrow powerband that has to be kept on the pipe. |
| MSM 450SM | B | Supermoto sessions on the tarmac and mixed surface layouts rather than motocross tracks. | The 450cc supermoto build with tarmac tyres and different geometry. |
S-Tier: MSM 250XF
The 250cc four stroke, rated around 31 kW. Forgiving entry point with enough power to clear jumps and not enough to spin the rear on every corner exit.
| Attribute | Detail |
|---|---|
| Tier | S |
| Best For | New riders learning throttle control, and MX2 style racing on tighter layouts. |
| Key Mechanic | Scratch built physics engine |
| Recommended Build | Motocross |
How to get it: Available from mid-game onward. See our walkthrough for the exact progression point.
Best builds using MSM 250XF: Pairs naturally with Motocross thanks to how their stat scaling lines up.
A-Tier: MSM 350XF
A 350cc four stroke at roughly 37 kW sitting between the 250 and the 450. It carries corner speed like the smaller bike while still pulling on long straights.
| Attribute | Detail |
|---|---|
| Tier | A |
| Best For | Riders who have outgrown the 250XF but find the 450XF unsettling on corner exit. |
| Key Mechanic | Bike setup tuning |
| Recommended Build | Supercross |
How to get it: Accessible in the early-to-mid game. Check our maps guide for the location.
Best builds using MSM 350XF: Pairs naturally with Supercross thanks to how their stat scaling lines up.
A-Tier: MSM 450XF
The 450cc four stroke at about 40 kW and the fastest bike in the default lineup. It demands clean throttle work because it will spin up and step out with very little provocation.
| Attribute | Detail |
|---|---|
| Tier | A |
| Best For | Experienced riders on open outdoor tracks where the extra power actually converts into lap time. |
| Key Mechanic | Dynamic terrain deformation |
| Recommended Build | Supermoto |
How to get it: Accessible in the early-to-mid game. Check our maps guide for the location.
Best builds using MSM 450XF: Pairs naturally with Supermoto thanks to how their stat scaling lines up.
B-Tier: MSM 250X
The 250cc two stroke at around 36 kW, with a narrow powerband that has to be kept on the pipe. Gear selection matters far more here than on any four stroke.
| Attribute | Detail |
|---|---|
| Tier | B |
| Best For | Riders after the two stroke challenge, and rhythm sections that reward carrying revs. |
| Key Mechanic | Rider body position |
| Recommended Build | Enduro |
How to get it: Found in later areas. Our walkthrough covers when you can access this.
Best builds using MSM 250X: Pairs naturally with Enduro thanks to how their stat scaling lines up.
B-Tier: MSM 450SM
The 450cc supermoto build with tarmac tyres and different geometry. Far more grip and far less tolerance for the sliding you get away with on dirt.
| Attribute | Detail |
|---|---|
| Tier | B |
| Best For | Supermoto sessions on the tarmac and mixed surface layouts rather than motocross tracks. |
| Key Mechanic | Dedicated server racing |
| Recommended Build | Free riding |
How to get it: Found in later areas. Our walkthrough covers when you can access this.
Best builds using MSM 450SM: Pairs naturally with Free riding thanks to how their stat scaling lines up.
Equipment Progression Path
The order you should acquire equipment as you progress:
- Starting gear → Enough to clear Practice Track
- MSM 350XF → Your first real upgrade, available early
- MSM 450XF → Mid-game upgrade with good scaling
- MSM 250XF → Best-in-slot, aim for this by late game
- Upgrade to max → The power spike from max upgrades is enormous
Equipment Tips
- Always upgrade your primary equipment before diversifying. One strong option beats three mediocre ones.
- Match your equipment to your build's stat priorities for maximum scaling.
- Body position is the skill that separates riders here, not throttle. Weight forward on corner entry to load the front tyre, weight back on landings and acceleration, and the bike starts doing what you expect instead of tucking or looping.
- Check our tier list for how equipment rankings affect overall build effectiveness.
More MX Bikes Guides
- MX Bikes MX Bikes Overview
- MX Bikes Best Builds
- MX Bikes Tier List
- MX Bikes Walkthrough
- MX Bikes Beginner's Guide
- MX Bikes Tips & Tricks
- MX Bikes Combat Guide
- MX Bikes Boss Guide
- MX Bikes Maps & Locations
- MX Bikes Crafting Guide
- MX Bikes Classes & Characters
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