Vance & Hines Gaslighter 2-Into-1 Performance Exhaust System For Harley Softail (2018–2026)
Race-Proven Stepped Headers & Aggressive Milwaukee-Eight Power gains
Transform the power output, lean angle, and acoustic rumble of your Milwaukee-Eight Softail with the Vance & Hines Gaslighter 2-Into-1 Performance Exhaust System. Engine-tuned specifically for 2018 through 2026 Harley-Davidson Softail models, the Gaslighter series combines competition-inspired stepped header geometry with an aggressive upswept megaphone muffler.
Crafted with precision TIG-welded construction, the Gaslighter system utilizes equal-length primary headpipes that merge into a high-flow collector. This engineered merge collector creates a scavenger effect that pulls exhaust gases out of the combustion chamber faster, eliminating mid-range torque dips and unleashing noticeable horsepower gains across the entire RPM band. The high-clearance design enhances ground clearance for aggressive cornering on street and canyon rides.
Technical Specifications & Product Details
| Feature / Metric | Product Specification | Rider Benefit |
|---|---|---|
| Brand / Manufacturer | Vance & Hines | American industry leader in motorcycle performance exhaust engineering |
| Exhaust Layout | 2-Into-1 Stepped Header System | Maximizes low-end torque and peak horsepower through thermal scavenging |
| Muffler Style / Core | Upswept Megaphone / High-Flow Louvered Core | Delivers a deep, throaty exhaust note under acceleration with high cornering clearance |
| Material Construction | High-Grade Stainless Steel & Full Coverage Heat Shields | Resists extreme thermal degradation while maintaining a pristine finish |
| O2 Sensor Provisions | 12mm & 18mm O2 Sensor Bungs Included | Allows seamless integration with factory sensors or wide-band autotune systems |
Performance Engineering & Acoustic Dynamics
### Stepped Header Scavenging Technology
Unlike standard straight drag pipes that suffer from reverted backpressure, the Vance & Hines Gaslighter utilizes stepped primary headers. By increasing tube diameter progressively from the exhaust ports to the 2-into-1 collector, gas velocity increases significantly. This scavenging velocity clears residual spent gases from the cylinders, allowing your M8 engine to draw in a denser fuel-air mixture on every intake stroke.
### Aggressive Sound & Increased Lean Angle
The Gaslighter megaphone muffler produces a deep, deep-frequency exhaust tone that turns heads without harsh metallic rasps. Positioned high and tight against the Softail frame rails, the upswept muffler body increases lean angle clearance, giving aggressive riders total confidence in tight twisties and aggressive lean maneuvers.
Vehicle Compatibility Guide
Vance & Hines Gaslighter 2-Into-1 Performance Exhaust Systems offer direct application fitment for 2018–2026 Harley-Davidson Softail models equipped with Milwaukee-Eight (M8) engines:
### Compatible Harley-Davidson Softail Models (2018–2026)
- Harley-Davidson Street Bob: FXBB, FXBBS (2018–2026)
- Harley-Davidson Low Rider / S / ST: FXLR, FXLRS, FXLRST (2018–2026)
- Harley-Davidson Softail Standard: FXST (2020–2026)
- Harley-Davidson Fat Bob / Fat Boy: FXFB, FXFBS, FLFB, FLFBS (2018–2026)
- Harley-Davidson Heritage Classic & Slim: FLHC, FLHCS, FLSL (2018–2026)
Fitment Note: Mid-control and forward-control fitment compatibility varies by model configuration; proper footpeg spacer hardware is included where necessary. Fuel re-tuning via an aftermarket tuner (e.g., Vance & Hines Fuelpak FP4) is highly recommended for optimal performance and engine longevity.
Step-by-Step DIY Installation Overview
Installing a Vance & Hines 2-into-1 exhaust system is a routine mechanical upgrade for experienced motorcycle builders. 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 System Removal
Secure the motorcycle on a lift frame. Carefully disconnect the front and rear oxygen sensor wire harness connectors. Unbolt the support bracket bolts and exhaust flange nuts at the cylinder heads, then remove the factory exhaust assembly and mounting brackets. Remove old exhaust gaskets from the cylinder ports.
### Step 2: Gasket Seat & Bracket Prep
Clean cylinder exhaust ports thoroughly and install fresh wire-woven exhaust gaskets. Mount the new Vance & Hines frame mounting bracket to the Softail frame using supplied grade-8 hardware, keeping fasteners snug but loose enough for adjustment.
### Step 3: Installing Gaslighter Headers & Megaphone
Transfer O2 sensors (using anti-seize compound on threads) into the Gaslighter header bungs. Fit the primary headers onto the head bolts, align the 2-into-1 collector, and slide on the upswept megaphone muffler. Torque exhaust flange nuts evenly to factory specs, tighten mounting brackets, wipe down exhaust pipes with brake cleaner or isopropyl alcohol to remove finger oils, and start the engine to check for leaks.
Frequently Asked Questions
### Do I need to re-tune my motorcycle after installing the Gaslighter 2-into-1 exhaust?
Yes. Switching from a factory exhaust to a high-flow 2-into-1 system significantly increases air volume through the engine. Installing a flash tuner such as the Vance & Hines Fuelpak FP4 or Dynojet Power Vision ensures correct air-fuel ratios, preventing lean engine conditions and maximizing horsepower gains.
### Should I replace my exhaust port gaskets during installation?
Always. Factory crush gaskets compress once and will not re-seal properly when a new pipe is installed. Installing fresh tapered or flat wire-woven exhaust port gaskets prevents exhaust leaks and guarantees an airtight seal at the cylinder head.
### Order Your Vance & Hines Gaslighter 2-Into-1 Exhaust Today
Unleash maximum Milwaukee-Eight torque, aggressive ground clearance, and race-bred styling on your 2018–2026 Harley Softail. Order your **Vance & Hines Gaslighter 2 Into 1 Performance Exhaust System** today with fast shipping!
