FMF BETA RR 350-480 20-25 Q4 HEX STAINLESS SLIP-ON
FMF is the leader in high performance quiet technology and their Q4 HEX is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available. With the Q4 you donāt need to hear the power, just feel the power!
FEATURES
- Less sound equals more ground
- Meets USFS and FIM World Enduro sound regulations
- Power gains throughout the entire rpm range
- Spark arrestor included
- Pounds lighter than stock
- Rugged design for off-road endurance
- Only US manufacturer to offer dedicated quiet exhaust systems
- MADE IN THE USA
Please note: Image for reference. Correct product will be provided.
SPECIFICATIONS
Notice: Closed Course Use Only
Item ID: 045667
Type: Slip-On
Configuration: Single
Const: Aluminium
Finish: Natural
Midpipe: Stainless Steel
Endcap: Stainless Steel
Spark Arrestor: Screen Insert (included)
Carb Warning: no
Quiet Insert: Included
Weight: 7.3 lbs
BIKE FITMENT
BETA
- RR350 4T 2020-2024
- RR350 4T RACE 2025
- RR350 4T RACING 2020-2024
- RR350 4T X-PRO 2025
- RR390 4T 2020-2024
- RR390 4T RACE 2025
- RR390 4T RACING 2020-2024
- RR390 4T X-PRO 2025
- RR430 4T 2020-2024
- RR430 4T RACE 2025
- RR430 4T RACING 2020-2024
- RR430 4T X-PRO 2025
- RR480 4T 2020-2024
- RR480 4T RACE 2025
- RR480 4T RACING 2020-2024
- RR480 4T X-PRO 2025
Product Information
Product Information
Shipping & Returns
Shipping & Returns

FMF BETA RR 350-480 20-25 Q4 HEX STAINLESS SLIP-ON
FMF BETA RR 350-480 20-25 Q4 HEX STAINLESS SLIP-ON
FMF is the leader in high performance quiet technology and their Q4 HEX is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available. With the Q4 you donāt need to hear the power, just feel the power!
FEATURES
- Less sound equals more ground
- Meets USFS and FIM World Enduro sound regulations
- Power gains throughout the entire rpm range
- Spark arrestor included
- Pounds lighter than stock
- Rugged design for off-road endurance
- Only US manufacturer to offer dedicated quiet exhaust systems
- MADE IN THE USA
Please note: Image for reference. Correct product will be provided.
SPECIFICATIONS
Notice: Closed Course Use Only
Item ID: 045667
Type: Slip-On
Configuration: Single
Const: Aluminium
Finish: Natural
Midpipe: Stainless Steel
Endcap: Stainless Steel
Spark Arrestor: Screen Insert (included)
Carb Warning: no
Quiet Insert: Included
Weight: 7.3 lbs
BIKE FITMENT
BETA
- RR350 4T 2020-2024
- RR350 4T RACE 2025
- RR350 4T RACING 2020-2024
- RR350 4T X-PRO 2025
- RR390 4T 2020-2024
- RR390 4T RACE 2025
- RR390 4T RACING 2020-2024
- RR390 4T X-PRO 2025
- RR430 4T 2020-2024
- RR430 4T RACE 2025
- RR430 4T RACING 2020-2024
- RR430 4T X-PRO 2025
- RR480 4T 2020-2024
- RR480 4T RACE 2025
- RR480 4T RACING 2020-2024
- RR480 4T X-PRO 2025
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
FMF is the leader in high performance quiet technology and their Q4 HEX is the next evolution in off road exhaust. The Q4 employs intricate chambers, baffles and proprietary multistage packing material making it the best performing quiet muffler available. With the Q4 you donāt need to hear the power, just feel the power!
FEATURES
- Less sound equals more ground
- Meets USFS and FIM World Enduro sound regulations
- Power gains throughout the entire rpm range
- Spark arrestor included
- Pounds lighter than stock
- Rugged design for off-road endurance
- Only US manufacturer to offer dedicated quiet exhaust systems
- MADE IN THE USA
Please note: Image for reference. Correct product will be provided.
SPECIFICATIONS
Notice: Closed Course Use Only
Item ID: 045667
Type: Slip-On
Configuration: Single
Const: Aluminium
Finish: Natural
Midpipe: Stainless Steel
Endcap: Stainless Steel
Spark Arrestor: Screen Insert (included)
Carb Warning: no
Quiet Insert: Included
Weight: 7.3 lbs
BIKE FITMENT
BETA
- RR350 4T 2020-2024
- RR350 4T RACE 2025
- RR350 4T RACING 2020-2024
- RR350 4T X-PRO 2025
- RR390 4T 2020-2024
- RR390 4T RACE 2025
- RR390 4T RACING 2020-2024
- RR390 4T X-PRO 2025
- RR430 4T 2020-2024
- RR430 4T RACE 2025
- RR430 4T RACING 2020-2024
- RR430 4T X-PRO 2025
- RR480 4T 2020-2024
- RR480 4T RACE 2025
- RR480 4T RACING 2020-2024
- RR480 4T X-PRO 2025














