Bassani B4 2-into-1 High-Output Exhaust - Harley Touring
Harley-Davidson Touring M8 (2017-2024)
The B4 High-Output system is purpose-built for high-displacement Milwaukee-Eight touring builds pushing over 120 horsepower.
Includes currency-adjusted exchange rate, South African customs clearance, and insured door-to-door courier dispatch from Cape Town.
Engineering & Performance Characteristics
Primaries step from 1-7/8" to 2" to maintain sufficient velocity without choking gas volume on 124ci, 128ci, and 131ci engine kits.
Engineered Highlights & Performance Gains
- Larger primary diameters accommodate aggressive cam lifts and 114 to 131ci kits
- True competition collector eliminates high-RPM backpressure choke
- Heavy-duty billet hanger bracket built for track and highway punishment
- Handcrafted stainless steel welds develop a distinctive golden heat sheen
Technical Specifications
- Brand & Origin
- Bassani Xhaust
- Product SKU / MPN
- BAS-1F74SS / 1F74SS
- System Architecture
- 2-into-1 Big Bore Performance System
- Material Construction
- AISI 304 Stainless Steel
- Surface Finish
- Brushed Raw Stainless
- Sound Profile
- Thunderous Full-Bore Race Tone
- Baffle Specification
- High-Output Stepped Perforated Core
- Header Dimensions
- 1-7/8" stepped to 2" with 2-1/2" collector
- ECU Tuning Status
- Tuning Required / Highly Advised
- Tuning Guidance
- Custom dyno map required; designed specifically for modified/cammed engines.
- Manufacturer Warranty
- 1-Year Limited Manufacturer Warranty
- Availability & Dispatch
- Express Sourcing (Direct factory sourcing, 7-10 business days delivery)
Included in Box
- B4 Stainless Header Pipes
- High-Output Muffler
- Spring Retainers
- Heavy Duty Mounting Kit
Verified Fitment List
Confirmed compatible models for Bassani B4 2-into-1 High-Output Exhaust - Harley Touring. 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 Bassani Xhaust
Explore the full range of performance exhaust systems, tuning accessories, and precision engineered components from Bassani Xhaust.
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Bassani B4 2-into-1 High-Output Exhaust - Harley Touring FAQs
Clear, evidence-backed answers regarding motorcycle exhaust fitment and supply.
How do I request fitment verification and pricing for Bassani B4 2-into-1 High-Output Exhaust - Harley Touring?
Does this Bassani Xhaust system require ECU re-tuning?
What is the delivery timeline for delivery within South Africa?
What warranty coverage applies to BAS-1F74SS?
Technical & Category Guides
- Bassani Xhaust Brand ShowcaseExplore all performance products and engineering heritage from Bassani Xhaust.
- 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 Bassani B4 2-into-1 High-Output Exhaust - Harley Touring
Provide your motorcycle make, model, year, and displacement for direct fitment confirmation and an official written quote.