S&S Cycle Intake Manifold — 55mm — 2017–2025 M8 Touring

S&S's cast aluminum intake manifold for the Milwaukee-Eight — the stock-bore replacement manifold, replacing the stock plastic manifold with a stronger, better-sealing cast piece.

FITMENT

Fits 2017–2025 Harley-Davidson Milwaukee-Eight (M8) Touring models (S&S fitment statement). 55mm bore — matches the stock throttle body.

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 / CARB

California / CARB: S&S Cycle publishes CARB Executive Order D-355-67 for this part — it is exempt from emissions tampering regulations under that EO and is legal for sale and use in California on the models the Executive Order covers, as well as in all other states.

SPECIFICATIONS

• Manufacturer: S&S Cycle — part number 160-0241A
• S&S M8 intake manifold, 55mm (S&S part #160-0241A)
• Cast aluminum construction (S&S)
• Includes intake seals (S&S)
• CARB Executive Order D-355-67 (S&S Cycle) — see the California note on this page
• Made in the USA

INSTALLATION

This is an internal engine/intake component swap. Follow the S&S instruction sheet included in the box and your Harley-Davidson service manual for torque specs and procedures. If you are not set up for throttle body and manifold work, we recommend having a qualified shop do the install — ask us about our install partners. No official S&S install video is published for this part.

QUESTIONS RIDERS ASK

Why replace the stock manifold?
The factory M8 manifold is plastic; the S&S cast aluminum manifold seals better, handles heat and boost better, and the CNC-ported version is port-matched for built engines.

Does it fit my throttle body?
Yes — this is the 55mm manifold for the stock-bore M8 throttle body on 2017–2025 Touring models.

Can you ship this to California?
Yes. S&S publishes CARB Executive Order D-355-67 for this part, so it is legal for sale and use in California on the models the EO covers — see the California note on this page.