CSR2 Fusion Parts: How They Work and Why Records Need Them

Most CSR2 players hit the same wall. You can buy Stages 1 to 5 with cash, the car still isn't fast enough, and the gap turns out to be fusion parts: small, random, brand-locked bonuses that are slow to collect. On our CSR2 world records sheet, the fastest cars all run high Evo points, the figure fusion parts add to.

This guide covers how fusion parts work, where they come from, what the records show about how much they matter, and the one situation where the fastest players take them off.

Fusion parts in one minute

• What they do: each part adds Evo points to one upgrade, pushing the car beyond what the upgrade stage gives on its own.
• Three rarities: green parts are Uncommon, blue are Rare and purple are Epic. Epic gives the most.
• Brand-locked: every part belongs to one manufacturer. A Porsche part only fits a Porsche.
• Slots: parts go into fusion slots on the upgrade screen. Tap an open slot, pick the part and fuse it.
• They stack: a part fused at Stage 3 keeps its bonus when that upgrade later reaches Stage 5.
• Removing costs gold: parts come off one at a time, in order, and go back to your inventory.

Those are the rules as the game's own help centre describes them. Your unused parts live in the garage: tap the (i) icon, then Inventory.

What the records say about fusions

Our records sheet lists the Evo points each record car was running. Evo isn't purely a fusion count, since a car's star level changes it too, but fusion parts add to it directly. And the pattern in Tier 5 is hard to miss.

Tier 5 records	Median Evo
Fastest 10% (89 records)	2,557
The other 90%	2,142
Fastest quarter	2,502
Slowest quarter	1,829

887 Tier 5 records with an Evo figure, at the time of writing.

The clearest number: every one of the 100 fastest Tier 5 records with an Evo figure runs at least 2,400 Evo. The first record below that line ranks 132nd. Across the rest of the tier, fewer than one record in five reaches 2,400.

Tiers 3 and 4 follow the same shape. The fastest tenth of Tier 4 records runs a median of 1,880 Evo against 1,572 for the rest; in Tier 3 it's 1,153 against 844. In every tier, the records at the top are the ones carrying the most.

The takeaway isn't that Evo is all that matters: our PP analysis and tune study show how much the setup and the car itself count. It's that a car without its fusions isn't competing for the top of a tier, however good its tune is.

Where fusion parts come from

• Events, multiplayer and Rare Imports. These are the sources the game's help centre lists.
• Parts crates. Community guides list crates opened with keys as a steady but random source; our CSR2 keys guide covers how to spend keys without wasting them.
• Stripping cars. Breaking up a car gives you fusion parts for its manufacturer. This is the most predictable route.

Stripping, the reliable route

Stripping a car destroys it and returns fusion parts for that brand. A widely shared 2019 community guide found that higher tiers, higher upgrade stages and higher star levels all return more parts, with a Tier 5 car at Stage 5 giving around ten. It also found that upgrades raise how many parts you get, not the chance of an Epic one. The game has had many updates since, so treat those counts as a rough guide.

Two habits follow from that. If the shop sells a cheap car from the brand you're building, it's a parts source as well as a car. And a duplicate car you'll never race is often worth more stripped than sitting in the garage.

Spending fusion parts well

• Pick one car per brand. Parts are brand-locked, so spreading a brand's parts across three of its cars leaves all three short. One finished car beats three half-built ones.
• Fusing early wastes nothing. Parts stack across stages, so a part fused at a lower stage keeps working as the car moves up.
• Plan before you fuse. Removal costs gold and goes in order, so moving parts between cars gets expensive fast.
• Save Epic parts for the car you'll keep. They're the scarcest and give the most.
• Remember Stage 6. Stage 6 parts also come from crates and events. Our upgrade order guide covers how stages and fusions fit together.

When record holders remove fusions

Here's the twist: more Evo isn't always faster. Five records on our sheet say outright that a fusion part was removed or never added:

• Shelby Cobra 427 S/C (Tier 3): both records remove Epic nitrous fusions, three on the Elite Customs Level 50 car and two on the Level 0 car.
• Honda NSX (Tier 4): one record removes three Epic engine fusions; another removes one.
• Ferrari F40 (Tier 4): one rare engine fusion removed.

The sheet doesn't say why, but for these cars the record tune ran faster without those parts. It's rare, five records out of more than 1,200, but it's worth knowing before you fuse every last slot on one of them. Check the record first, and our tuning guide explains how the setup and the parts interact.

Skipping the grind

Fusion parts are the slowest part of building a car because they're random and brand-locked. If you'd rather not wait, our fusion parts service fits a full load to the car you name, the Stage 6 upgrade covers the stage above, and the fusion parts and Stage 6 pack covers every brand. Or skip building entirely: every car in our car collection can be delivered fully maxed, which our maxed cars guide explains in detail. Before buying from anyone, read our honest take on whether CSR2 modding is safe.

The short version

Fusion parts add Evo points, come in green, blue and purple, fit only their own brand and cost gold to remove. On our records sheet, every one of the top 100 Tier 5 records with an Evo figure carries at least 2,400, so a car without its fusions isn't competing at the top. Strip duplicates for parts, commit each brand's parts to one car, and check the record before filling every slot: a handful of record holders run faster with fewer.