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Description
4.9
157 ratings
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1
Game changer
I got the cam,decha intake tube, tst air box cover and tune. This woke my grom up more than I thought it would. It’s like a completly different bike. I love it
Liam · 7 days ago
Whole New Bike!
Purchased the Stage 2 Tune and S1 Cam package. Paired it with a Yoshimura straight cyclone exhaust and a Mnnthbx performance intake. This thing rips now!! Before I was getting maybe 56mph (non tucked) and now with the tune and all the other upgrades I hit 67mph (non tucked) on the same stretch of flat road. Tucked the bike was running up to 69-70mph!! Extremely satisfied. The bike has more power through all the RPM range versus stock. I’m confident even with a passenger on the Dax I could still pull 60+mph.
J · June 21, 2026
Currently my gromlin is in the shop getting some last min work done including the parts i ordered from DHM. I personally cannot speak on how good or bad they are but a few friends plus countless youtube videos have nothing but great things to say about Dhm. After the SMSBR and riding the tail of the dragon ill have put plenty of miles on the ecu and camshaft. Ill be sure to update. Hopefully by then the all inclusive BBK for the 22+ grom have come back in stock.
Tim · June 9, 2026







