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Service & Tune-Ups

Oil, primary and trans fluid, plugs, filters, belts. Scheduled service that keeps your bike right.

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What this covers

About service & tune-ups.

Most big-twin Harleys run three separate oils: engine, primary and transmission. Let one go too long and it shows up later as a noisy clutch, a notchy shift or worse. Syndicate Cycle handles scheduled service on Harleys and other V-twins at the shop on Montgomery St in Oroville, and you hear what is due now and what can wait before a wrench turns.

Heat is what wears out oil in a V-twin. Most of Harley's big twins are air-cooled or oil-cooled, with some touring models adding liquid cooling to the cylinder heads, so the oil carries a big share of the engine's heat. In a Sacramento Valley summer it works hard, and oil that has broken down protects less. Stop-and-go riding on a hot afternoon is where that shows up first.

On most big-twin models the clutch runs in the primary oil, so the right primary fluid at the right level has a lot to do with how the clutch engages and releases. Belt-driven bikes need the belt looked at too. Tension that is off, cracks across the teeth, or missing teeth are all reasons to replace a belt before it lets go on the road.

Service at the shop covers the basics done right: plugs checked or replaced, the air filter inspected, fluids changed, and the belt and brakes looked over while the bike is up. You leave with a clear list of what is fine, what is due and what can wait. The parts counter carries Drag Specialties and HardDrive, and anything not on the shelf gets ordered.

Parts Counter

Drag Specialties dealer.

We also carry HardDrive and Dunlop, plus exclusive suspension components. If we do not have the part on the shelf, we will get it in.

Drag Specialties HardDrive Dunlop Exclusive Suspension
01 / What We Do

Other Services

Service & Tune-Ups

Oil, primary and trans fluid, plugs, filters, belts. Scheduled service that keeps your bike right.

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Engine & Performance

Cam swaps, big bore kits, stage upgrades and exhaust work, set up to run clean and pull hard.

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Tires & Brakes

Mount and balance, pads, rotors and lines. So you stop the way you are supposed to.

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Electrical & Diagnostics

No-starts, charging problems, wiring and codes traced back to the actual cause, not a guess.

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Custom & Bagger Builds

Bars, exhaust, wheels, audio and paint. Built the way you actually want to ride it.

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Trikes & Touring

Baggers, trikes and touring rigs serviced and dialed in for real miles, not just around town.

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Independent shop, locally owned
Prefer to call? (530) 990-1475

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03 / FAQ

Service & Tune-Ups, answered.

Go by the service schedule in your owner's manual, which runs on miles. If you have lost track, bring it in and you will get a straight answer on what is actually due.

Harleys are most of what rolls through the door. Ride something else? Call and ask, and you will get a straight answer.

Use the oil grade your owner's manual lists for your temperature range, and do not stretch the interval in hot weather, since heat breaks oil down faster.

Cracks across the teeth, chunked or missing teeth, frayed edges, or a shiny glazed surface. Any one of those is worth having checked soon.

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