Star M28 Milwaukee-Eight Camshaft — .540 Lift

A dual-profile, high-lift cam engineered for riders who want more — more torque, more top end, and more of that aggressive chop that turns heads at every stoplight. This cam is the biggest bolt-on camshaft compatible with a stock M8 Gen II (2024-2026 models).

Part Description

The Star M28 Milwaukee-8 Camshaft is a dual-profile performance camshaft purpose-built for the Milwaukee-Eight Gen II platform. With .540 lift and an intake closing point of 28° ABDC, the M28 delivers a broader, more aggressive power curve than the 30/30 — making it the ideal choice for riders looking to push their build further. The dual-lobe design puts low-RPM torque on the intake side and top-end power on the exhaust side, covering the full range of real-world riding demands. Expect an aggressive, unmistakable lope at idle that leaves no doubt about what's under the covers.

High performance Lifter Guides are required. Star Gold Lifter Guides (M8726LG) recommended.

Designed specifically for H-D M8 2024-2026 models. However, this cam can be installed in all Gen I models (2017-2023) but requires high performance valve springs. Star M8 Valve Spring Kit (640SK-2) is recommended.

**Please note that we cannot ship cams to California. California customers please contact Moto Performance Garage of Las Vegas.**

Star M28 Milwaukee-8 Camshaft - .540 Lift

Name: Star M28 Milwaukee-8 Camshaft - .540 Lift
Brand: Star Racing
SKU: M8540
Price: 369.95 USD
Availability: InStock

SKU: M8540

$369.95

Quantity

.540 lift — higher lift profile for increased airflow and peak performance gains

2,000 to 5,500 RPM powerband — broad, usable range from low-speed cruising to highway pulls

Dual-profile cam design — intake lobe optimized for low-RPM torque, exhaust lobe built for top-end power

Aggressive idle lope — that classic, hard-hitting Harley sound (chop)

Intentionally designed for 2024–2026 Gen 2 M8 engines but can run in Gen 1 engines with upgrades.
Increased torque versus stock and many comparable cams

Especially strong in the mid-RPM range for balanced street power

Great option for riders with a mix of cruising and aggressive acceleration

Aggressive lope (chop) sound

Best For: Street & mid-range performance

Engine	Years	Valve Springs	Lifter Guides
M8 Gen 2 (non VVT) - 117-121 cu in	2024-2026	Stock compatible.	Upgrade required. M8726LG recommended.
Gen 1 (non VVT) - 107-117 cu in	2017-2023	Upgrade required. 640SK-2 recommended.	Upgrade required. M8726LG recommended.

Pistons, Push Rods, and Lifters can be stock.

Exhaust pairing matters: Star Cams will perform with all pipe configurations, but exhaust selection has a meaningful impact on results. Short exhaust systems create sound wave differentials that negatively affect low-RPM tune quality — a condition that cannot be fully corrected through tuning alone. For the smoothest low-end torque curve, a long 2-into-1 exhaust is strongly recommended. Trusted options include D&D, Fuel Moto, Bassani, ThunderHeader, and Krome Werks.

Professional tuning recommended for best results.