Thanks to advancements in technology, the newest driverains are awesome. But the components can also be awesomely expensive, so it pays to take care of them. Hoping to make drivetrain cleaning a bit easier, Park Tool just introduced two new cleaning brushes uniquely shaped to get the job done.
GSC-3 Drivetrain Brush
Thanks to smaller gaps between cassette teeth, new tools are needed to keep those massive cogs clean. The new GSC-3 brush has extra-long and stiff bristles on one end, and a skinny contoured end on the other.
Either side can be used to dig out grit, bits of twigs, leaves, or anything else that’s found a home between your teeth. The contoured end is also said to be great for cleaning the tight spots around derailleur pulley wheels.
Priced at $5.95, this is an affordable tool that looks pretty useful.
GSC-4 Cassette Cleaning Brush
For more broad cleaning of cassettes (and tires according to Park), the GSC-4 Cassette brush is worth a look. The stiff nylon bristles are curved to help follow the contours of the cassette, chainrings, or other round items, and the brush is available for $7.95.
TSI-1 Tubeless Sealant Injector
Elsewhere in the Park Tool lineup, they’ve introduced a Tubeless Sealant Injector which is self-explanatory. The oversized syringe body has a gauge for measuring sealant up to 3.5 oz (100cc), and it can be opened up for cleaning.
Tubeless sealant injectors often face two hurdles – either the tube is too big to fit into some valve stems, or so thin that some sealants will clog it. While Park doesn’t give a list of compatible valve stems, they do provide a list of compatible tubeless sealants:
- Continental® RevoSealant
- Maxima Racing Oils®
- Muc-Off® No Puncture Hassle
- Orange Seal® Endurance
- Orange Seal® Regular
- Orange Seal® Subzero
- Panaracer® Seal Smart
- Peaty’s
- Slime® STR
- Squirt® SEAL
- Stan’s NoTubes® original formula
If you happen to have a valve stem with an opening that is too small for the syringe, you can still use it – you’ll just have to remove the tire bead from one side of the rim. According to Park, the tube dimensions are 120mm (4.75″) long x 3.5mm (0.14″) diameter.
You can pick up the TSI-1 for $24.95.
