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Discussion Starter · #1 · (Edited)
89389


2018 :

Appearance mods :

Asv Gold clutch and break lever

Fender delete

New grips

race rear sets


Performance Mods :

DHM TUNE STAGE 3 (removed may 2021 )
DHM CAM
DHM h/c piston

*stock crank snapped

DHM 186 W Dhm race head

chain tensioner wheel & manual tensioner

super oil pump

koso intake manifold and TB


Airbox mod : DHM /koso intake tube and filter

Exhaust:
Yoshi RS9T

35t rear sprocket (+1 tooth) (removed with 125) kit )

14t front sprocket (-1 tooth)( removed with 125 )

16t front

35rear

koso clutch and 60% springs w/ lifter plate ( i do not recommend, do not work well - and was removed)

SMR Clutch, chimera lifter plate, smr %60 springs



Kitco oil cover (removes oil spinner)
 

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how do you like the 14/35 gearing? i have 14/34 and looking to go up a couple in the rear like around 14/36
 

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Discussion Starter · #3 ·
Here is my write up
how do you like the 14/35 gearing? i have 14/34 and looking to go up a couple in the rear like around 14/36
I personally prefer torque throughout the entire band in every gear opposed to a higher TopSpeed which may not be attainable on flat ground.

If you’re looking for highest possible top speed stick with the 14/35

If you’re looking for Fastest acceleration , and don’t mind the relatively low top speed of 68, then 14/35

I suspect a 14/36 would lower top speed to around 64 miles or an hour - Which is too slow for me
 

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2020 Honda Grom
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Discussion Starter · #6 ·
my next mod will be saving for a seat , followed by purchasing gold rims and installing ceramic bearings - new rubber

whenever the clutch fails I will upgrade the springs the oil pump and cam tensioner. But I imagine that won’t be for a long time. -I don’t wheelie

also paying off my bike this year woot !
 

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Discussion Starter · #10 ·
Ok so here is the parts list for the grom :

DHM 186 KIT
DHM ported race head
KOSO intake manifold
KOSO 34mm throttle body
TB PARTS CAM
NEW TUNE BY DHM
150cc injector
I’VE ALSO DECIDED TO INTALL A NEW HIGH FLOW OIL PUMP

I also emailed Dave and will be working with him on Determining what happened to the H/C 125 piston

Ill update this post as parts come in.
 

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2015 Honda MSX125 Grom
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Where are you buying the dhm kit from cause I was looking into buying one too and it says sold out
 

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2020 Honda Grom
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1,339 Posts
Email or call DHM, sometimes he has more inventory than time to update his website.
 
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Discussion Starter · #13 ·
Opmid temp installed Today. New version that runs off rear break wires not head light. Very clean install- me liky
 

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2020 Honda Grom
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No payment means more money for parts!
 
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Discussion Starter · #16 ·
After talking with Dave, ill also be adding koso cam chain Tensioner And removing the hydlico lifter for a manual one.

Cant wait to get the parts .... 2 weeks or less to go
 

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Discussion Starter · #19 ·
So my stock cranks is broken and will be replaced with a forged one with the new 186 kit .... so should be ready in 3 days
 
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