S&S Cycle 540C Camshaft Kit — Chain Drive — 2017-Up M8

The 540 is the torque specialist for big bore M8s — S&S built it for riders who keep the revs below 6,000 and want the motor to pull hard where a Touring bike lives. This is the chain-drive kit.

FITMENT

Fits 2017-up Harley-Davidson M8 models, excluding VVT models. In our catalog: 2017-up M8 Touring models.

Not sure it fits your bike? Email info@norcalbaggersupply.com — email is the fastest way to reach us — and we'll confirm before you order. You can also call 916-626-9030 (Mon–Fri, 9 AM–5 PM PT).

CALIFORNIA NOTICE

Race use only — not legal for use in California. S&S Cycle publishes no CARB Executive Order for this part, and S&S marks it "NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLE." It is not legal for use on pollution-controlled vehicles operated on public streets or highways in California, and we cannot ship it to a California address — orders shipping to California will be cancelled and refunded. Available for shipment to the other 49 states.

SPECIFICATIONS

• Manufacturer: S&S Cycle — part number 330-0713
• Cam kit includes the camshaft and all required bearings, o-rings, and hardware (S&S)
• Cam: S&S 540C, chain drive — designed to add stump-pulling torque to big bore M8s (S&S)
• Valve lift: .540 in. intake / .540 in. exhaust
• Duration at .053 in. lift: 228.3° intake / 235.1° exhaust (front); 223.6° / 244.6° (rear)
• Lobe centers: 96.4° intake / 83.6° exhaust (front); 96.9° / 95.4° (rear)
• Valve lift at TDC: .175 in. intake / .262 in. exhaust (front)
• Made in the USA

INSTALLATION

Camshaft installation is internal engine work. The kit includes the bearings, gaskets, o-rings, and hardware S&S specifies for the job; follow the S&S instruction sheet included in the box and your Harley-Davidson service manual for timing and torque specs. S&S publishes an official cam chest install video — it is embedded below. Professional installation is recommended; email us if you'd like a referral to one of our install partners.

QUESTIONS RIDERS ASK

540 or 465 for my bike?
The 465 is the bolt-in torque cam for stock-displacement motors. The 540 is for big bore builds — more lift, more duration, aimed at larger engines that stay under 6,000 RPM.

Do I need valve springs?
The 540 runs .540 in. of lift; S&S pairs it with valve springs in its cam chest kits. Check your heads' spring capacity or email us your build and we'll confirm before you order.

Can you ship this to California?
No. This is a race-use-only part that does not conform to CARB standards, so we do not ship it to California — see the California Notice above. It is available to the other 49 states.