---
product_id: 46662640
title: "Chad Wienen FMF 4.1 Exhaust Kit in Blue Carbon Cap & Vortex ECU 2009-2020 - Compatible with Yamaha Yfz450r"
brand: "fmf"
price: "VT23915"
currency: VUV
in_stock: false
url: https://www.desertcart.vu/products/46662640-chad-wienen-fmf-4-1-exhaust-kit-in-blue-carbon
store_origin: VU
region: Vanuatu
---

# Chad Wienen FMF 4.1 Exhaust Kit in Blue Carbon Cap & Vortex ECU 2009-2020 - Compatible with Yamaha Yfz450r

**Brand:** fmf
**Price:** VT23915
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Chad Wienen FMF 4.1 Exhaust Kit in Blue Carbon Cap & Vortex ECU 2009-2020 - Compatible with Yamaha Yfz450r by fmf
- **How much does it cost?** VT23915 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/46662640-chad-wienen-fmf-4-1-exhaust-kit-in-blue-carbon)

## Best For

- fmf enthusiasts

## Why This Product

- Trusted fmf brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

This Special Chad Wienen Power Kit includes: FMF 4.1 FULL EXHAUST BLUE CARBON END CAP:The FMF 4.1 Chad Wienen Full Exhaust compatible with the Yamaha YFZ450R incorporates Resonance Chamber Technology, with patented core shape lowers sound level while maintaining maximum power output and canister shape increases internal volume for more sound absorbing material. The chamber is designed to enhance and refine exhaust pressure. The exhaust is tuned with optimized core specifications and comes with the quality, craftsmanship and performance expected from FMF. Meets AMA and FIM sound requirements.VORTEX FUEL AND IGNITION ECU:The Vortex ECU compatible with the YAMAHA YFZ450R is like our CDI and EFI Interceptor rolled into one module. The ECU controls not only Spark timing and Voltage output but also Fuel Metering and other engine management functions. The result is more power, better power, easier starting and ultimately faster lap times. This unit comes pre-programmed with 10 Performance Fuel & Spark timing maps as well as having 3 additional switches for user trimming (adjusting) of Fuel in Lo, Mid and Hi throttle openings. The ECU plugs directly into the bikes standard wiring harness and interfaces with all the standard engine sensors such as ECT (Engine Coolant Temperature), IAT (Intake Air Temperature), MAP (Manifold Absolute Pressure), TPS (Throttle Position Sensor), CPS (Crank Position Sensor) to adjust fuel and spark timing for optimum power delivery in all weather, altitude and load conditions.

## Features

- Type: Full System     Configuration: Single     Construction: Titanium     Finish: Blue Anodized     Midpipe: Stainless Steel    ›See more product details

## Images

![Chad Wienen FMF 4.1 Exhaust Kit in Blue Carbon Cap & Vortex ECU 2009-2020 - Compatible with Yamaha Yfz450r - Image 1](https://m.media-amazon.com/images/I/41uExfOHFgL.jpg)
![Chad Wienen FMF 4.1 Exhaust Kit in Blue Carbon Cap & Vortex ECU 2009-2020 - Compatible with Yamaha Yfz450r - Image 2](https://m.media-amazon.com/images/I/41Kx8fWvgQL.jpg)
![Chad Wienen FMF 4.1 Exhaust Kit in Blue Carbon Cap & Vortex ECU 2009-2020 - Compatible with Yamaha Yfz450r - Image 3](https://m.media-amazon.com/images/I/41s0oqOjcbL.jpg)

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**Shop now:** [https://www.desertcart.vu/products/46662640-chad-wienen-fmf-4-1-exhaust-kit-in-blue-carbon](https://www.desertcart.vu/products/46662640-chad-wienen-fmf-4-1-exhaust-kit-in-blue-carbon)

---

*Product available on Desertcart Vanuatu*
*Store origin: VU*
*Last updated: 2026-06-05*