FMF Factory Fatty Big Bore Pipe 025224 — GasGas / KTM / Husqvarna 85cc 2018-2024

Product Description

Unlock the true potential of your big bore engine build with the FMF Factory Fatty Big Bore Pipe. Based directly on the high-performance designs trusted by professional riders, this pipe is engineered to complement the increased displacement and compression of your modified 85cc engine.

The Factory Fatty Big Bore pipe is built for serious performance, utilizing a 19-gauge steel header for maximum strength and durability, paired with a 20-gauge steel body and rear section to keep overall weight to a minimum. Each pipe features meticulously hand-pounded seams, providing not just the iconic "factory look," but also ensuring smooth flow transitions that maximize exhaust scavenging for peak power output.

Top Features: FMF Factory Fatty Big Bore Pipe

• Pro-Proven Design: Engineered based on exhaust geometries used by championship-winning professional riders.
• Big Bore Optimized: Specifically tuned to enhance the power characteristics of big bore engine modifications.
• Dual-Gauge Construction: 19-gauge steel header for impact resistance, combined with 20-gauge steel for weight savings.
• Factory Craftsmanship: Hand-pounded seams deliver superior flow and a professional aesthetic.

Please review the detailed compatibility data below to ensure an exact fitment match for your motorcycle before finalizing your purchase.

Fitment List

Frequently Asked Questions

Q: Is this pipe only for big bore kits?
A: While it is specifically tuned to maximize the performance of big bore kits, it can be used on stock engines; however, it is designed to work in conjunction with the increased displacement of big bore setups for optimal results.

Q: Will this fit my standard 85cc bike?
A: Yes, it is compatible with the 85 SX/TC85/MC 85 models listed above, but riders with stock engines may find the standard Factory Fatty pipe better suited to their specific power band needs.

Expert Pro-Tip: When running a big bore kit on a small displacement engine, heat management is critical. Pair this pipe with a high-quality, pre-mix oil and ensure your cooling system is in top condition to handle the extra thermal load of the increased power output.

Recommended Pairings:
o KTM Performance Parts
o Husqvarna TC 85 Performance Parts
o MX Off-Road Chains

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