Best Upgrades for a 2018 Street Glide
Ask five people what to put on a 2018 Street Glide first and you'll get five different answers, mostly guesses. Here's ours, and it isn't a guess — every part below is verified to fit this exact bike.
The Touring family is built for the miles that actually add up — full fairings, real storage, and a chassis tuned for hours in the saddle, not just the ride to the coffee shop. Street Glide's handlebar-mounted batwing fairing gives it its signature silhouette; Road Glide's frame-mounted sharknose does the same job with a steadier feel at highway speed. Together they're Harley's best-selling family by a wide margin — most Harley riders on the highway are riding one of these two.
A verified starting build
Generated by the same verified-fitment engine that powers the builder — refreshed as the catalog grows, priced from real listings.
Arlen Ness Monster Sucker Air Cleaner Chrome
$314.95Air Intake
One of the most common first upgrades on any M8 — a freer-breathing intake pairs naturally with a cam or exhaust change later.
Fuel Moto Fuel Moto 129" Big Bore Kit Outlaw - M8 (107")
$1,499.95Big Bore Kits
A larger-displacement cylinder and piston kit — real horsepower and torque gains, and real engine work to install.
⚙ Requires Twin Tuner 2 - EFI Tuner - Race - TC/M8 (2001-2020) — included in this build
Daytona Twin Tec Twin Tuner 2 - EFI Tuner - Race - TC/M8 (2001-2020)
$328.75Fuel Tuner
Any breathing or cam change needs fueling to match — a tuner is how the engine actually uses the parts around it.
↳ Included because Fuel Moto 129" Big Bore Kit Outlaw - M8 (107") requires it
⚠ Closed-course/race product — confirming legal use for your riding is on you.
Feuling REAPER M-Eight Cam - 538 Grind (Chain Drive)
$329.95Cams
The heart of an M8 performance build — cam choice shapes where the engine makes its power.
⚙ Not for VVT engines - excludes 117 VVT and 121 VVT trims
⚠ Closed-course/race product — confirming legal use for your riding is on you.
Rivera Primo Polished Hydraulic End Cover Kit
$384.99Clutch
Clutch upgrades change lever pull and engagement feel — a common pairing with a performance build that's added more power than the stock clutch was sized for.
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Frequently asked questions
What's the most popular first upgrade for a 2018 Street Glide?
Exhaust, almost always — usually paired with an air intake and a tuner so the sound and the breathing change together. See the build above for what that combination actually costs and fits on your 2018 Street Glide.
Will a part fit my 2018 Street Glide without anything else changing?
If it's shown in your build above, yes. Every part on this page is checked against your 2018 Street Glide's exact fitment data before it's ever recommended — and if something needs a companion part to work right, like a tuner with certain cams, that's called out on the item itself, not left for you to find out after it arrives.
How much does a typical first build cost for a 2018 Street Glide?
It depends on what you're after. Your build above shows one real, verified option priced from actual listings — click through to personalize it to your own budget and see it change in real time.