Tech Tips

Repair guides written from the workstand in Ballston Spa — bleeding brakes, chasing creaks, setting preload, and the tools each job actually needs.

Unior Integrated Cassette Lockring Wrench w/Guide 1670.8/2BI-US — Shimano/SRAM HG cassette removal tool with integrated handle

Drivetrain

When and how to replace your cassette

Cassettes wear in lockstep with chains; catch them at the right point and you swap a $50 part instead of a $250 one. This guide covers when to call it, how to tell a cassette from a freewheel, and how to remove either cleanly with the right Unior tool.

· 7 min read

Mechanic hands using Unior Master Chain Tool 1647 to drive a pin through a bicycle chain in a workshop

Drivetrain

When and how to replace your chain

How to tell when your chain is worn, why a worn chain damages your cassette and chainrings, and how to break and reinstall cleanly with the Master Chain Tool.

· 8 min read

Hand sliding a feeler gauge between brake pads inside a hydraulic disc brake caliper to measure pad wear

Brakes

Disc brake pad maintenance

How to inspect disc brake pads for wear without pulling the wheel, when to replace them, and the simple tools that make the check painless.

· 2 min read

Suspension fork mounted in a Unior workstand being serviced with a Unior ratchet, workshop bit set behind

Suspension

Why service suspension?

The basics on why you should service your suspension components.

· 1 min read

Tubeless mountain bike tire on a Specialized Butcher GRID Trail rim, hand checking the valve at the bead

Wheels & Tires

Tubeless - the benefits

What tubeless actually buys you — fewer punctures, lower pressures, a smoother ride — and what to know before you ditch inner tubes.

· 1 min read

Mechanic applying Juice Lubes Chain Juice lube to a bicycle chain through the squeeze bottle nozzle

Drivetrain

How to clean and lubricate your chain

A clean, properly lubed chain shifts better and lasts longer. Here is the degrease-wipe-lube routine, step by step.

· 1 min read

Worn black disc brake pads and a gold caliper retaining pin set on a metal workshop bench before bedding-in

Brakes

Disc Brake Pad Bedding In Procedure

Fresh Sinter pads need a proper bed-in to reach full power: the stop-by-stop procedure, and the mistakes that glaze pads instead.

· 4 min read

Mechanic using a Unior 178/2HX-US 5 mm Y-wrench on the rear derailleur limit screws of a red road bicycle

Drivetrain

How to Adjust a Rear Derailleur

A workshop guide to indexing a rear derailleur: what the barrel adjuster, H/L limit screws, and B-tension each do, plus a step-by-step adjustment sequence and a job-to-tool cheat sheet.

· 7 min read

White hardtail mountain bike clamped in a Unior workstand by the seatpost, ready for Hollowtech II bottom bracket service

Bottom Brackets

Replace or clean your Hollowtech II Bottom Bracket

A workshop guide to servicing a noisy Shimano Hollowtech II bottom bracket: how to tell whether it needs cleaning or replacing, how to remove the cranks and cups with a 16-notch external wrench, and the reinstall torques.

· 8 min read

Unior disc brake alignment tool 1757-2 inserted between rotor and caliper pads to fix disc brake rub on a wheel

Brakes

Fix Disc Brake Rub

That tsss-tsss of rotor on pad is fixable: caliper alignment, piston resets, and rotor truing to silence disc brake rub.

· 2 min read

Unior 193HX-US 3 mm hex T-handle removing a jockey wheel bolt from a black rear derailleur cage held in hand

Drivetrain

Service Your Jockey Wheels

Jockey wheels quietly wear to the point of failure. How to clean, grease, and check play in your derailleur pulleys before they let the chain go.

· 1 min read

Get 10% off your first order

Plus Tech Tips guides and new-tool news, straight from the bench. No spam.