SP Concepts' Street Pro 4.5 slip-on mufflers for M8 baggers — a 4.5-inch slip-on with a perforated baffle, built to give your Harley a deep growl over stock, with no tuning required.
FITMENT
Fits all 2017–2026 Harley-Davidson M8 Touring (Bagger) models (per SP Concepts). These are slip-on mufflers that mount to the stock head pipe.
Not sure it fits your bike? Email info@norcalbaggersupply.com — email is the fastest way to reach us — and we'll confirm before you order. You can also call 916-626-9030 (Mon–Fri, 9 AM–5 PM PT).
CALIFORNIA NOTICE
Race use only — not legal for use in California. SP Concepts publishes no CARB Executive Order for this muffler, so it does not conform to California Air Resources Board (CARB) standards for sale or use in California. It is not legal for use on pollution-controlled vehicles operated on public streets or highways in California, and we cannot ship it to a California address — orders shipping to California will be cancelled and refunded. Available for shipment to the other 49 states.
SPECIFICATIONS
Manufacturer: SP Concepts (Stainless Powered Concepts) — Lake Elsinore, California, USA
SP Concepts part number: SPC-2-007-B
Type: 4.5″ slip-on mufflers for the stock head pipe
Baffle: perforated baffle — a deep growl over stock (per SP Concepts)
No tuning required; maintains the stock catalytic converter in the head pipe (per SP Concepts)
Finish: Black
INSTALLATION
Slip-on install with basic hand tools — the mufflers mount to the stock head pipe. No official SP Concepts install video exists for the Street Pro slip-ons, so this listing is manual-only for installation guidance.
QUESTIONS RIDERS ASK
Do I need a tune after installing these? No — SP Concepts states the Street Pro slip-ons need no tuning, and they maintain the stock catalytic converter in the head pipe.
Will these fit my 2021 Road Glide? Yes — SP Concepts publishes the Street Pro for all 2017–2026 M8 Touring (Bagger) models.
Can you ship this to California? No. This is a race-use-only part that does not conform to CARB standards, so we do not ship it to California — see the California Notice above. It is available to the other 49 states.
