This article serves as your complete walkthrough of the , covering model codes, size charts (Std, 0.25, 0.50, 0.75, 1.00), material science, and how to cross-reference the right piston for your engine build. What is a "FIM Piston"? Understanding the Brand Before diving into the catalog, it is crucial to understand what "FIM" represents. In the aftermarket industry, FIM is renowned for producing high-quality cast pistons and forged pistons that often serve as direct replacements for Japanese brands like Suzuki, Honda, and Yamaha.
You need a bore gauge. If your current bore is 62.00mm (std) but has wear of 0.10mm, you cannot use a standard piston. You have to jump to OS 0.25 .
| Model | Engine Code | FIM Part No. | Oversize Options | Notes | | :--- | :--- | :--- | :--- | :--- | | Suzuki Satria 120 / 125 | K3V | FIM-K3V | STD, 0.25, 0.50 | Single ring groove option | | Suzuki Thunder 125 | GS125 | FIM-GS125 | STD, 0.25, 0.50 | 4 corners cooling slots | | Yamaha RX-King 135 | 5KE | FIM-5KE | 0.50, 0.75 | Forged dome crown | These are heavy-duty cast pistons with anti-friction coating.
| Model | Engine Code | FIM Part No. | Compression Height | Bore (Std) | | :--- | :--- | :--- | :--- | :--- | | Honda Tiger / GL 200 | KF3 / K3C | FIM-200-KF3 | 22.5mm | 63.5mm | | Suzuki Shogun 125 | K3V-2 | FIM-SHOGUN | 21.0mm | 57.0mm | | Kawasaki Ninja 150 | EX150 | FIM-EX150 | 24.0mm | 59.0mm | | Honda Vario 125/150 | K1X | FIM-K1X | 20.4mm | 52.5mm | FIM also makes car pistons, often used for Daihatsu and Suzuki engines.
Whether you are rebuilding a Suzuki Satria FU150, a Honda Tiger, a Kawasaki Ninja 250, or even a Daihatsu/Xenia car engine, the piston is the heart of the combustion process. Using the wrong specifications can lead to knocking, overheating, or catastrophic engine failure.
Look under SUZUKI > SATRIA F150 > 2014-2020 . You find the line: FIM-SCF150-6250 for OS 0.25.
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