FMF
FMF Factory 4.1 RCT Stainless Muffler Carbon End - Honda CRF450R CRF450RX 2021-2026
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DESCRIPTION
Unleash the full potential of your Honda CRF450R or CRF450RX with the legendary FMF Factory 4.1 RCT a race-bred exhaust built for riders who demand maximum performance, lighter weight, and championship-level power delivery. Designed, tested, and manufactured 100% in Southern California, this system combines cutting-edge engineering with aerospace-grade materials to deliver a serious boost in performance and throttle response.
Performance Meets Precision
The Factory 4.1 RCT incorporates FMF’s Resonance Chamber Technology both inside and out, optimizing exhaust flow for massive power gains across the entire RPM range. Its shorter overall length reduces crash vulnerability and enhances mass centralization by keeping the muffler closer to the engine a feature born straight from the factory race bikes.
Key Features:
~ Massive power gains throughout the RPM range
~ Aerospace-grade materials for ultimate strength and performance
~ Lightweight design delivers significant weight savings
~ RTS – Rapid Tuning System for easy repacking and service
~ Shorter, race-inspired profile reduces crash damage
~ Muffler moved closer to the motor for improved handling and balance
~ Manufactured 100% in FMF’s Southern California facility
~ Includes screen spark arrestor and 94dB quiet insert
Specifications:
Item ID: 041602
Type: Slip-On
Configuration: Single
Construction: Natural Aluminum Muffler
Midpipe: Stainless Steel
End Cap: Carbon Fiber
Spark Arrestor: Screen Insert (Included)
Quiet Insert: 94dB Insert (Included)
Use: Closed Course Only
Note: This system is designed for closed course competition use only. Not legal for use on public roads.
If you’re serious about performance and want factory-level technology on your CRF, the FMF Factory 4.1 RCT is the ultimate upgrade delivering power, precision, and race-winning performance in one sleek package.
SHIPPING
SHIPPING
Orders can be shipped from either Auckland, Hamilton, Kihikihi, New Plymouth, Wellington or Christchurch warehouses. Depending on the location of items you have ordered, Motozone will ship your purchase from the closest location where possible.
New Zealand
Free shipping on order over $199.00.
For orders under $199.00, shipping throughout New Zealand is $7.99 for Urban and $12.99 for Rural Shipping.
In most cases shipping is overnight however it can take 2-3 days depending on time/day the order was placed. If delivery is to a rural address please allow a couple of extra days. We can ship to your place of work!
Australia
Free shipping on order over $199.00.
For orders under $199.00, shipping throughout Australia is $7.99
Delivery takes approx. 5-10 days delivery.
RETURNS
RETURNS
Any goods purchased from Motozone can be returned within 30 days of receipt for refund or exchange.
The goods must be returned new, unused, unaltered, not previously installed, and in a sellable condition with all of the original packaging.
This right of return will not cover items that are special orders and found to be an incorrect fit, this is the responsibility of the purchaser, however all other standard warranties will apply.
Freight costs will not be refunded.
For the returns process contact or phone Motozone with your invoice number and the reason for return. We will then email you the correct form for processing.