Park Tool HCW-17 Fixed-Gear Lockring Wrench Tool

Product Description

Park Tool HCW-17 Fixed-Gear Bicycle Lockring Wrench

The Park Tool HCW-17 removes and installs external notched lockrings, which are found on fixed-gear rear cogs, single speed cassette hubs, adjustable cup-and-cone bottom brackets, and some mid-drive e-bike motor lockrings including Batang BBSH & BBS02. The HCW-17 features two different radius hooks for a precise fit on 41, 42, 43, and 44mm lockrings. Constructed from spring steel and nickel plated for a lifetime of use. 11 5/8″ (29cm) in length for excellent leverage.

Park Tool manufactures a full line of wrenches and tools for every fitting found on a bicycle, including bottom bracket & hub lockrings. Here are a few options we make that are similar to the HCW-17:

HCW-17 Lockring Tool

Typical Applications
Notched lockrings found on fixed gears, cup & cone bottom brackets, & e-drive motors Bottom bracket lockrings Bottom bracket adjusting cups common on older English bicycles and less expensive bicycles One piece cranks Fixed cups on cup-and-cone bottom brackets
Tool Fitting #1
Notched lockrings with 41-42mm OD 3-notch lockrings with 46mm OD 16mm wrench flats Slotted adjusting cups with 42-44mm OD 36mm box-end wrench
Tool Fitting #2
Notched lockrings with 43-44mm OD 2, 3, 4, 6 or 8 notched lockrings with 45-48mm OD Adjustable cups with 2 recessed slots 3-notch fixed cups with 42-46mm OD 29mm fixed-width pin spanner

TRUSTED SINCE 1963

Since our origins in the back of a bike shop in 1963, it has been Park Tool’s sole mission to design and manufacture high-quality tools that empower mechanics and riders of all skill levels to service their bicycles. Just like our other 500+ tools, our cassette and freewheel tools are a product of our decades of experience and expertise in the industry, in the shop and on the trail.

The HCW-17 features two different radius hooks for a precise fit on most head-gear lockrings
One is sized to fit rings with an outside diameter of 41 to 42mm.
The other side fits rings of 43 to 44mm
Also fits single-speed cassette hubs using lockrings with external notches