Shimano CS-HG20-7 Speed Cassette | Hyperglide | MTB | 12-27T | Reconditioned

Description

Shimano CS-HG20-7 Speed Cassette | 12-27T | Reconditioned

Notes from MyBikeThing Built with Shimano’s reliable Hyperglide technology, this CS-HG20 delivers smooth shifting even under load. The wide-range 12-27T gearing makes it perfect for mixed terrain riding and recreational mountain biking. What sets this apart is its carefully restored condition – we’ve brought back its functionality while preserving its durability through thorough anti-corrosion treatment.

Condition This cassette has undergone restoration to address previous surface corrosion. While there is some cosmetic discoloration remaining, the critical shifting surfaces and tooth profiles are in excellent mechanical condition. The cog faces show minimal wear, and anti-corrosive treatment has been applied to prevent future oxidation. “Want to learn more about the restoration process or see additional photos? I’m Paul – a mechanic who believes in giving good components a second life. Let’s chat about your build plans.” You put in the miles, we put in the work! 30 day Guarantee, rest assured of fit, function and condition.

Workshop Wisdom When installing this cassette, take extra care to fully seat it on the freehub body – sometimes restored cassettes need a bit more attention during installation. Pro tip: Apply a light coat of marine-grade grease on the freehub splines to prevent future corrosion issues.

Tech Specs

• Speed compatibility: 7-speed
• Cog range: 12-27T
• Largest cog: 27T
• Smallest cog: 12T
• Material: Steel with anti-corrosive treatment
• Weight: 395g (approximate)
• Freehub body type: Shimano HG
• Lockring included: Yes
• Chain compatibility: 7/8-speed

Value Assessment:

Market Value: $15-20 USD
Original Retail: $29.99

Worth it because:

• Professionally restored with anti-corrosive treatment
• Reliable Hyperglide shifting technology
• Perfect range for recreational MTB use
• Economical drivetrain solution

Need guidance on compatibility or restoration details? We’re cyclists too and love talking tech. Contact us through MyBikeThing’s workshop line for detailed cassette compatibility and maintenance advice.

Keywords: Shimano HG20, 7-speed cassette, mountain bike, hyperglide, 12-27T, restored cassette, vintage MTB, budget drivetrain, refurbished parts, anti-corrosion, recreational cycling, reliable shifting