Park Tool Cassette Sprocket Removal Tool Sprocket Holder Tool SR-18.2 PTSR182

Park Tool SR-18.2 Combination Chain Whip & Freewheel/Lockring Remover

For 1/8″ Fixed Gear and Single Speed Cassettes | Heat Treated Steel | Ergonomic Handle

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🔧 Indispensable for Fixed Gear and Single Speed Users

The Park Tool SR-18.2 is a combination chain whip and freewheel/lockring remover designed to safely remove 1/8″ fixed gear sprockets and single-speed cassettes. Its heat-treated steel construction prevents bending and flexing, while its long ergonomic handle provides comfortable and effective leverage.

Additionally, with its integrated 1″ (25.4 mm) socket, you can also remove lockrings using Park Tool freewheel/cassette lockring tools.

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🏆 Key Features

• Combined design – chain whip and lockring remover in one tool
• 1/8″ fixed gear and single speed cassette compatibility – ideal for fixie, single speed, and track bikes
• Heat-treated steel – resistant to bending and flexing
• Hardened pins – holds the chain securely, prevents slipping
• 1″ (25.4 mm) socket – compatible with Park Tool freewheel/cassette lockring tools
• Ergonomic plastic-coated handle – comfort and good grip during prolonged use
• Long leverage arm (35.5 cm / 14″) – high torque, easy removal

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🔧 Technical Details

Brand / Model
Park Tool SR-18.2

Intended use
Removal of fixed gear sprockets and single speed cassettes, lockring removal

Compatibility
• 1/8″ fixed gear sprockets
• 1/8″ single speed cassettes
• Park Tool freewheel/cassette lockring tools (1″ / 25.4 mm)

Material
Heat-treated steel (body and pins), plastic-coated handle

Socket size
1″ (25.4 mm) – for Park Tool FR series and other compatible tools

Length
35.5 cm (14″)

Special features
• Hardened chain pins
• Ergonomic handle
• Bend-resistant construction

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🚀 Why Park Tool SR-18.2?

Fixed gear and single speed specific design
On fixed gear bikes, the rear sprocket is a component that needs to be removed under high torque. The SR-18.2 is specifically designed for these sprockets, which are 1/8″ thick. The chain whip section holds the sprocket while the long handle allows you to easily loosen it.

Combined functionality
The same tool can be used as a chain whip and can also drive cassette lockring tools with its 1″ socket on the other end. With a single tool, you can both hold the sprocket and remove the lockring.

Heat-treated steel
Some chain whips can bend and flex when high torque is applied. The SR-18.2 is resistant to such deformation thanks to its heat treatment. It maintains its shape for many years.

Hardened pins
Specially hardened pins prevent the chain from slipping on the whip, ensuring a secure grip. The chain firmly holds the sprocket, preventing slipping during the process.

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🛠️ Applications

Fixed gear bicycles
• Removal of the rear sprocket
• Removal of the lockring

Single speed bicycles
• Removal of the cassette
• Removal of the lockring

Track / velodrome bicycles
• Changing rear sprockets on racing bikes

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🔄 Compatibility

Compatible sprockets and cassettes
• 1/8″ fixed gear sprockets
• 1/8″ single speed cassettes

Compatible lockring tools
Park Tool FR series and all other freewheel/cassette tools with a 1″ (25.4 mm) socket:
• FR‑5.2 / FR‑5.2G (freewheel remover)
• FR‑6 (lockring tool)
• BBT‑9 / BBT‑32 (bottom bracket tools – not suitable for cassette lockrings)
• Other 1″ compatible brands

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🧴 Usage Instructions

For fixed gear or cassette removal:

1. Remove the rear wheel from the bicycle.

2. Remove the lockring – Attach the appropriate tool to the SR-18.2's 1″ socket and loosen the lockring.

3. Use the chain whip – Place the chain part onto the teeth of the sprocket, ensuring the pins grip the chain.

4. Tighten the handle – While holding the sprocket steady with the chain whip, use the appropriate tool (or the socket part of the SR-18.2) with your other hand to remove the sprocket.

5. When installing a new sprocket – Assemble in reverse order, paying attention to torque values.

Important warning
Ensure you use the correct tool for lockring removal. On fixed gear bicycles, the lockring is usually left-threaded (loosens clockwise).

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📦 Scope of Delivery

• 1 x Park Tool SR-18.2 Combination Chain Whip & Freewheel/Lockring Remover

Lockring tool, sprocket, and other accessories are not included.

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🏁 Who Is This Product For?

• Fixed gear bicycle users
• Single speed bicycle owners
• Track / velodrome cyclists
• Home mechanics performing their own bike maintenance
• Professional bicycle workshops
• Those who prefer Park Tool quality

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🛒 Park Tool Products Complementing This Product

• FR‑5.2 / FR‑5.2G – freewheel remover
• FR‑6 – lockring tool
• HCW‑16 – fixed gear lockring tool
• PCS‑10.3 / PRS‑25 – repair stand
• Torx / Hex set – for other assembly operations
• Chain lubricant and cleaner – for post-maintenance

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📋 Important Note

Park Tool products are the industry standard in bicycle service equipment. No claims can be made for visual or typographical errors.

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