Newly acquired a used and abused 2019 Grom. Slowly rebuilding and keeping "stockish" with a few upgrade to stock (no bbk) for a lil more solid performance.
After several forums mentioned the tensioner arm failing, I upgraded it for peace of mind. Went with the speed shop after weighing options. Love the metal gears more than hard plastic. Also like the bearing because it takes wear off the screw that could fail and cause a bigger problem. Quality is very nice. OEM arm rubber was coming apart.
Paired it with the decha manual tensioner (OEM cap had a deep dent, tension was changing) and a takegawa 4th bearing support. Install is easy as long as you have the tools to remove flywheel.
Did the upgrades because I upgraded to a tb cam with dhm ecu reflash package, and a drop in DNA Air filter with dhm koso tube mod). Already had a two bros exhaust. Eventually will add in the dhm stock bore high piston and stage 3 flash. So everything is supported and ready.
Shipping was fast. David communicates very quickly. Was looking at another service provider, but DHMs quick customer service earned my loyalty.
