In stock

FMF Powercore 4 Hex Slip-On Muffler — Beta

FMF · #1821-2005 · Slip-Ons / Exhaust

Hi-Flo end cap boosts all-around performance
Computer-designed and dyno-tested for ever 4-stroke application
Enhanced sonic evacuation delivers a higher flow of exhaust gases, which increases power
A stainless steel mid-pipe mates to the computer-designed rear can for lightweight durability
Round perforated steel inner cores make for optimum flow, using hi-flo technology

$449.99

In stock. Ships in 2–4 business days · free shipping over $150.

Questions? Call the shop: 801-361-3010

Real shop · real humans · 1231 N 1300 W Ste A, Centerville, UT 84014

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Description & features8 features

Hi-Flo end cap boosts all-around performance
Computer-designed and dyno-tested for ever 4-stroke application
Enhanced sonic evacuation delivers a higher flow of exhaust gases, which increases power
A stainless steel mid-pipe mates to the computer-designed rear can for lightweight durability
Round perforated steel inner cores make for optimum flow, using hi-flo technology
FMF's exclusive cross-weave internal packing provides longevity and maximum sound dispersion
Elliptical aluminum can offers strategic sizing for superior performance
Closed course competition use only.

Specifications12 specs

Muffler Material: Aluminum
Units: Each
Muffler Color/Finish: Raw
Riding Style: Off-Road
Type: Slip-On
End Cap Material: Stainless Steel
Weight: 7.1 lb
Model: PowerCore 4 HEX
Pipe Material: Stainless Steel
Shipping weight: 7.45 lb
Package size: 24 × 12 × 5.5 in
Country of origin: USA

Fitment23 models · Beta

Beta23 models

350 RR2020, 2023–2024
350 RR 4T2021, 2025
350 RR S 4T2024
350 RR X-Pro2025–2026
350 RR-Race Edition2020–2026
350 RR-S2020–2023
390 RR2020, 2023–2024
390 RR 4T2021, 2025
390 RR Race Edition 4T2026
390 RR S 4T2024
390 RR X-Pro2025–2026
390 RR-Race Edition2020–2026
390 RR-S2020–2023
430 RR2020, 2023–2024
430 RR 4T2021, 2025
430 RR S 4T2024
430 RR X-Pro2025–2026
430 RR-Race Edition2020–2026
430 RR-S2020–2023
480 RR2020, 2023–2024
480 RR 4T2021, 2025
480 RR X-Pro2025–2026
480 RR-Race Edition2020–2026

Fitment comes from the catalog data for this part. Double-check your year, model and trim before you order — or call the counter at 801-361-3010 and we’ll check it with you.

Part numbers

Salto part #: 1821-2005
FMF part #: 045666

Shipping

In stock. Ships in 2–4 business days by ground.

Ground shipping is $14.95, free on orders over $150. Stock is checked again before your card is charged.

Questions4 answers

Is it in stock?: Yes — it’s in stock right now. We check again the moment you order, before anything is charged.
How fast will it get to me?: Usually 2–4 business days by ground.
Will it fit my machine?: It’s listed for the models in the Fitment section above. Not sure about your trim or year? Call the counter at 801-361-3010 and we’ll check it with you.
Is this genuine FMF?: Yes. It’s new and genuine, straight from Salto — FMF part #045666.