Halcyon 450 Performance Package. Tuner plus Performance exhausts
- Regular price
- $1,850.00 USD
- Sale price
- $1,850.00 USD
- Regular price
-
- Unit price
- per
about this
*IMPORTANT- this package will ship sometime between May and June
Halcyon 450 Performance Package
(Tuner + Dual Stainless Exhaust System)
This is the complete upgrade for the Halcyon 450 — not just more power, but a better-running, better-built system from front to back.
We dyno tested a brand new bike (only 40 miles) in stock form, then again the same day with this full package installed.
Real Dyno Results
- Stock: 24.9 HP
- With Performance Package: 30.5 HP
That’s a gain of over 5.5 horsepower — roughly 22% more power.
And this was on a tight, brand new engine. As the bike breaks in, there’s typically even more performance available.
What This Package Fixes
From the factory, the Halcyon 450 runs very rich, especially in the mid-range.
That causes:
- Soft, sluggish throttle response
- A noticeable pulsing while cruising
- Lost power where you actually ride
This package solves that.
- The tuner corrects the fueling
- The exhaust lets the engine breathe properly
Result:
- Stronger acceleration
- Smooth, steady throttle
- Power that’s actually usable across the RPM range
This isn’t just a peak number — it’s a completely different riding experience.
What’s Included
Performance Tuner (Plug & Play)
- Pre-mapped specifically for this exhaust setup
- No cutting, no permanent changes
- Installs in minutes
Dual Stainless Steel Exhaust System
- Full stainless steel construction (no coatings, no rust issues)
- Classic pea-shooter styling (MotoCult signature look)
- Two-piece design for easier shipping and installation
Upgraded Mounting Bracket
The OEM brackets are a known weak point.
This package includes a reinforced, redesigned mounting system that:
- Improves durability
- Reduces vibration stress
- Solves a common failure point
Easy Installation
- Bolt-on exhaust system
- Plug-and-play tuner
- No fabrication required
If you’re comfortable doing basic work on your bike, you can install this.
What You’ll Notice Immediately
- Faster, stronger acceleration
- Smooth cruising (no more mid-range surge)
- Better throttle control
- A deeper, cleaner exhaust tone
- A bike that finally feels right
Q&A
Q: Will fish tails fit these exhausts?
Yes. Both Janus fish tails and MotoCult fish tails are compatible with this system.
Q: Why does Janus claim 29 HP, but your dyno shows about 25 HP stock?
Great question.
Janus (like most manufacturers) quotes crank horsepower, which is measured at the engine before drivetrain losses.
Our dyno numbers are rear wheel horsepower, which is what actually makes it to the ground.
It’s normal to see a difference of about 10–15% between those two measurements.
Also, this test bike only had 40 miles on it. A brand new engine is still tight and typically makes less power than it will after break-in.
The key takeaway: we tested before and after on the same bike, same day, so the performance gain you see is real and directly comparable.
Q: Do I need to tune anything myself?
No. The tuner is pre-mapped specifically for this exhaust setup. Just plug it in and ride.
Q: Will this hurt my engine?
No. This corrects an overly rich factory tune and improves airflow. You’re bringing the engine closer to how it should run.
Q: Is this loud?
It has a deeper, more refined tone than stock — not obnoxious, but definitely more alive.
Q: Is installation difficult?
No. The exhaust is bolt-on and the tuner is plug-and-play.
Q: Why replace the mounting bracket?
The OEM brackets are a known weak point. This upgraded design improves strength and long-term reliability.
Q: Will performance improve after break-in?
Yes. This testing was done on a brand new engine. As it loosens up, performance typically increases further.