Vance & Hines Gaslighter 2-Into-1 Performance Exhaust System For Harley Touring (2017–2026)
Competition-Grade Stepped Headers & Aggressive Milwaukee-Eight Bagger Power
Maximize power output, bagger clearance, and acoustic performance on your Milwaukee-Eight bagger with the Vance & Hines Gaslighter 2-Into-1 Performance Exhaust System. Engineered specifically for 2017 through 2026 Harley-Davidson Touring models, the Gaslighter system marries track-tested stepped header technology with a high-flow, aggressive upswept megaphone muffler.
Precision TIG-welded from high-grade stainless steel, the Gaslighter system replaces restrictive factory headpipes and heavy dual mufflers with a tuned 2-into-1 configuration. Its equal-length primary headers merge into a high-efficiency collector, generating an exhaust scavenging effect that eliminates mid-range torque dips, optimizes backpressure, and unleashes massive horsepower gains across the entire rev range under loaded touring conditions.
Technical Specifications & Product Details
| Feature / Metric | Product Specification | Rider Benefit |
|---|---|---|
| Brand / Manufacturer | Vance & Hines | Industry benchmark in American V-Twin performance exhaust design and racing technology |
| Exhaust Architecture | 2-Into-1 Stepped Primary Headers | Increases exhaust velocity and thermal scavenging to maximize torque and peak output |
| Muffler & Core Design | Upswept Megaphone / High-Flow Louvered Core | Produces a deep, muscular exhaust note while increasing bagger lean angle clearance |
| Material Construction | High-Grade Stainless Steel & Full-Coverage Heat Shields | Prevents heat discoloration and provides extreme durability for cross-country touring |
| O2 Sensor Provision | Dual 12mm & 18mm O2 Sensor Bungs Included | Supports seamless integration with stock sensors or aftermarket wideband tuning setups |
Performance Engineering & Acoustic Dynamics
### Advanced Stepped Header Scavenging
Unlike standard straight-pipe exhausts that create damaging exhaust reversion waves, the Vance & Hines Gaslighter utilizes progressive stepped header geometry. By expanding header tube diameters step-by-step from the exhaust ports to the collector, exhaust gases accelerate continuously. This high-velocity vacuum pulls burnt fuel mixture out of the cylinders, filling the combustion chamber with a fresh, dense charge for smoother roll-on acceleration.
### Deep Sound & Saddlebag Clearance
The Gaslighter megaphone muffler produces an aggressive, throaty exhaust rumble under acceleration that settles into a clean, non-tiring drone at highway cruising speeds. Engineered specifically to clear stretched saddlebags and factory touring rear setups, the upswept muffler position also enhances ground clearance for aggressive cornering in tight twisties.
Vehicle Compatibility Guide
Vance & Hines Gaslighter 2-Into-1 Performance Exhaust Systems offer direct application fitment for 2017–2026 Harley-Davidson Touring models equipped with Milwaukee-Eight (M8) engines:
### Compatible Harley-Davidson Touring Models (2017–2026)
- Harley-Davidson Street Glide: FLHX, FLHXS, FLHXST, FLHXSE (2017–2026)
- Harley-Davidson Road Glide: FLTR, FLTRX, FLTRXS, FLTRU, FLTRK, FLTRSE (2017–2026)
- Harley-Davidson Electra Glide / Ultra Limited: FLHT, FLHTCU, FLHTK (2017–2026)
- Harley-Davidson Road King: FLHR, FLHRC, FLHRXS (2017–2026)
Fitment Note: Compatible with floorboards, mid-controls, and extended saddlebags; necessary mounting bracket hardware included. Fuel re-tuning via an aftermarket ECU tuner (such as the Vance & Hines Fuelpak FP4) is strongly recommended to achieve optimal fuel-air mapping and power gains.
Step-by-Step DIY Installation Overview
Installing a Vance & Hines 2-into-1 exhaust system on a touring bagger is a standard bolt-on mechanical procedure. Estimated installation time: 2 to 3 hours.
### Required Tools
- Motorcycle Center Frame Jack
- 3/8″ Drive Torque Wrench & Ratchet Set
- 1/2″ & 9/16″ Sockets / Combination Wrenches
- O2 Sensor Wrench / Socket and fresh exhaust port gaskets
### Step 1: Stock Exhaust & Saddlebag Removal
Remove saddlebags to access rear muffler mounts. Unplug front and rear oxygen sensor wiring harnesses. Unbolt stock crossover headers, mufflers, and cylinder flange nuts, then carefully remove the factory exhaust system and old port gaskets.
### Step 2: Bracket Mounting & Exhaust Port Prep
Clean cylinder ports thoroughly and seat fresh high-performance wire-woven exhaust gaskets. Install the new Vance & Hines touring frame mounting bracket to the frame rail, keeping fasteners hand-tight for alignment leeway.
### Step 3: Installing Headers, Megaphone & Sensor Reconnect
Apply anti-seize compound to O2 sensor threads and install sensors into the Gaslighter header bungs. Bolt primary headers to the cylinder heads, attach the 2-into-1 collector, and mount the upswept megaphone. Torque flange nuts and bracket bolts to specification, wipe stainless steel pipes down with brake cleaner to remove oils, reconnect O2 sensor plugs, and test run the engine.
Frequently Asked Questions
### Do I need to re-tune my Milwaukee-Eight bagger after installing this 2-into-1 system?
Yes. Upgrading from a factory dual exhaust to a high-flow 2-into-1 exhaust system significantly alters engine airflow. Flashing your ECM with an aftermarket tuner like the Vance & Hines Fuelpak FP4 ensures proper air-fuel ratios, reduces engine heat, and maximizes overall horsepower and torque gains.
### Does this 2-into-1 exhaust leave an empty space under the left saddlebag?
Because a 2-into-1 system replaces the stock dual-muffler setup with a single right-side performance muffler, the space under the left saddlebag remains open. For riders wanting a balanced dual-exhaust appearance, left-side ghost pipe options or saddlebag filler panels are available.
### Order Your Vance & Hines Gaslighter 2-Into-1 Exhaust Today
Unleash maximum M8 touring horsepower, aggressive cornering clearance, and show-stopping stainless style on your 2017–2026 Harley bagger. Order your **Vance & Hines Gaslighter 2 Into 1 Performance Exhaust System** today with fast shipping!
