Filters
AVAILABILITY
CLEARANCE
CATEGORIES
BRAND
Showing parts that fit
How do you upgrade the performance and exhaust note on a 2025 Harley-Davidson Breakout? The ultimate way to unlock the full potential of the Milwaukee-Eight 117 engine on a 2025 Breakout is by installing a high-performance Star Racing 540 Camshaft, a maximum-flow Trask Assault Air Cleaner, and a set of deep-rumbling Rinehart Racing 3.5-inch Slip-On Mufflers. This combination optimizes airflow, drastically improves mid-range and top-end horsepower.
When the owner of this 2025 Harley-Davidson® Breakout rolled into Rollies Speed Shop with a clear vision, we knew we had something special on our hands. This customer was not about to slap on a Low Rider S front end and call it done. He wanted the modern muscle bike with old-school Pro Street Breakout styling and genuine performance, backed by this dual-disc conversion, delivering big stopping power and a stance that commands respect.
Based in Brisbane, Queensland, Rollies Speed Shop is Australia’s aftermarket V-Twin headquarters. We’re the sole Australian and New Zealand distributor for Performance Machine, Trask Performance, Star Racing, Rinehart Racing, and over 130 other premium brands. Established in 1979, Rollies has been working with builds just like this 2025 Breakout, showcasing exactly what’s possible when you combine cutting-edge parts with years of technical know-how.
The Performance Machine 21″ x 3.50″ Heathen front wheel gives this 2025 Breakout an instant custom edge, sharpening the bike’s stretched stance while helping visually balance the wide rear tyre.
Its gloss black finish with polished contrast cuts adds premium detail that ties in neatly with the factory styling, while the split-spoke Heathen design creates a bold focal point up front.
The matching Heathen Rear Wheel gives this 2025 Breakout the wide, planted custom stance it deserves. Its seven-spoke Heathen design flows perfectly with the matching front wheel, while the black contrast-cut platinum finish adds sharp highlights and depth from every angle.
Built in the USA by Performance Machine, this rear wheel helps fill the Breakout’s rear guard for a tougher, more balanced look, matching rotors and pulleys also installed help complete this seamless look.
The Performance Machine 125x4B Classic Calipers give this dual-disc front brake upgrade the extra stopping power, control, and balance the rider wanted from a serious performance build.
Its fixed-mount four-piston design delivers strong, predictable braking feel, while the black contrast-cut billet finish ties in perfectly with the Heathen wheels and rotors for a clean, factory-quality custom look.
The Star Racing M40 Cam is built for riders who want their Gen 2 Milwaukee-Eight® to take full advantage of a high-flow air cleaner and exhaust. It delivers a stronger pull through the real-world 2,000–5,500 RPM riding range, a tougher cammed-up idle, and harder acceleration where you actually use it.
Its dual-profile design gives you the best of both worlds: Punchy low-RPM torque with stronger top-end power. While still working with factory valve springs to help keep installation simpler and more cost-effective.
For a 2025 Breakout, it’s a serious upgrade that adds more attitude, more usable power, and that aggressive Star Racing sound.
Once the 2025 Breakout had the wheels, brakes, and drivetrain sorted, the Trask Performance Assault Clear Air Cleaner Kit was the next upgrade. Its high-flow filter and velocity stack help the Milwaukee-Eight breathe easier, unlocking around 8HP over stock for sharper throttle response, stronger mid-range pull, and better top-end performance.
Finished in gloss black with a billet backing plate, hidden breather system and clean factory-style fit, it gives the bike a tough custom look without sacrificing proven, dyno-tested performance.
Rinehart 3.5-inch Slip-On Mufflers give this Softail a stronger voice and a more responsive feel. Their larger 3.5-inch body improves exhaust flow for a solid performance boost, while the deep, old-school Rinehart rumble gives this bike that tough V-twin sound riders love, without the harsh, tiring drone on longer rides.
Finished in black with black contrast-cut end caps, they add a clean custom look and are sold as a pair to suit 2018–2024 Softail Slim, Street Bob, Standard, Low Rider, Breakout, and Fat Boy models.
These indicators are designed to mount neatly underneath the hand controls, helping clean up the front end of this motorcycle without sacrificing visibility, quality, or legality.
It’s a simple upgrade, but visually, it makes a big difference. They are built with a high-quality billet housing, so they’re tough enough for real-world riding. Inside, they use super-bright LEDs to make sure the rider is seen.
E-Marked and approved for Australian road use, giving you peace of mind that your bike still meets the right standard.
Stay up to date with the latest products and best parts and accessories info available from Rollie’s Speed Shop by joining our subscriber list.
You’ll also go into our monthly prize draws to win cool Rollie’s merchandise. It doesn’t get any easier than that 
Give us a call us on
(07) 3252 5381 and one of our
parts specialist’s will help
you get the parts you need.
"*" indicates required fields
