S&S MK45 4.5" Touring Slip-On Mufflers - M8 Touring
Harley-Davidson Touring M8 (2017-2024)
The definitive big-body touring muffler from S&S, combining a massive 4.5-inch diameter presence with a subterranean bass exhaust note.

Includes currency-adjusted exchange rate, South African customs clearance, and insured door-to-door courier dispatch from Cape Town.
Engineering & Performance Characteristics
Ceramic sound packing withstands extreme exhaust temperatures indefinitely, preventing the packing burnout common in fiberglass mufflers.
Engineered Highlights & Performance Gains
- Generous 4.5-inch diameter body fills factory saddlebag cutouts perfectly
- Advanced multi-layer stainless mesh and ceramic wool dampens high-frequency harshness
- Removable dB reducer insert lets you tune acoustic output
- Contrast-machined billet aluminum end caps can be rotated in multiple positions
Technical Specifications
- Brand & Origin
- S&S Cycle
- Product SKU / MPN
- SS-550-0669 / 550-0669
- System Architecture
- Bagger Slip-On Muffler Pair
- Material Construction
- Cold-Rolled Steel Shell with Billet Aluminum End Caps
- Surface Finish
- Satin Black Ceramic with Contrast Chrome Slash End Caps
- Sound Profile
- Deep Resonant Low-Frequency Touring Roar
- Baffle Specification
- Stainless Perforated Core with Ceramic Acoustic Packing
- ECU Tuning Status
- Factory Fuel Map Compatible
- Tuning Guidance
- Works with stock ECU mapping on factory headpipes.
- Manufacturer Warranty
- 2-Year Limited Manufacturer Warranty
- Availability & Dispatch
- In Stock (Cape Town stock, 1-3 business days delivery)
Included in Box
- Pair of MK45 4.5-Inch Mufflers
- Billet End Caps
- dB Reducers
- Torca Clamps
- Hardware
Verified Fitment List
Confirmed compatible models for S&S MK45 4.5" Touring Slip-Ons - M8 Touring (Black/Chrome). Roxstar verifies model, year, and frame clearances prior to dispatch.
Not sure if your specific model year, engine size, or aftermarket luggage brackets are compatible? Our Cape Town technicians confirm all dimensions before taking payment.
Submit your bike specs for verification →South African Courier Logistics
All orders are dispatched from our Cape Town hub via fully trackable courier services. We deliver directly to private residences, commercial addresses, or designated motorcycle performance workshops.
About S&S Cycle
Explore the full range of performance exhaust systems, tuning accessories, and precision engineered components from S&S Cycle.
View all S&S Cycle systemsMore Systems from S&S Cycle

S&S Grand National 2-into-2 High Mount - Indian FTR 1200
Indian FTR 1200, FTR 1200 S, FTR Rally & FTR R Carbon (2019-2024)

S&S Grand National 4" Slip-On Mufflers - M8 Touring
Harley-Davidson Touring M8 (2017-2024)

S&S SuperStreet 2-into-1 Exhaust - M8 Softail (Black)
Harley-Davidson Softail M8 (2018-2024)
S&S MK45 4.5" Touring Slip-Ons - M8 Touring (Black/Chrome) FAQs
Clear, evidence-backed answers regarding motorcycle exhaust fitment and supply.
How do I request fitment verification and pricing for S&S MK45 4.5" Touring Slip-Ons - M8 Touring (Black/Chrome)?
Does this S&S Cycle system require ECU re-tuning?
What is the delivery timeline for delivery within South Africa?
What warranty coverage applies to SS-550-0669?
Technical & Category Guides
- S&S Cycle Brand ShowcaseExplore all performance products and engineering heritage from S&S Cycle.
- Performance Products CatalogBrowse all 220+ performance exhausts, headers, and tuning upgrades.
- Fitment Confirmation GuideLearn how we verify motorcycle year, model, and sensor bung specs.
- Exhaust Tuning & Fuel MappingECU tuning, fuel management, and air-fuel ratio advisory.
Enquire on S&S MK45 4.5" Touring Slip-Ons - M8 Touring (Black/Chrome)
Provide your motorcycle make, model, year, and displacement for direct fitment confirmation and an official written quote.
