Original Post:
I've seen many threads talking about specific differences, I think we should have a general thread, a single place people can go to. I see people asking all the time
I remember seeing an excellent site that listed everything different, but I've just spent 2 hours search and can't find it again.
Things like: Engine, plastics, oil filter, longer wheel base, stock gearing, apparently the ja65 has a transmission sensor built in but no display? And much more
These are all things I've read in different places, but can't remember when or where. Especially things like the ja65 having the new ECU plug, could open options for easy cluster swaps, but to even find that the updated trail has a different plug is extremely buried.
------------------------------------------------------------------------------------------
JA55 to JA65 changes (not complete).
All information is as accurate as I think I can make it, but by no means does that mean is 100% correct.
Generally is about non-USA models. Will be updated as the list becomes more complete
New engine: (Now meets Euro5)
Engine combines the bottom end (with redesigned crankcases) from the Japanese-market C110 with the SOHC, two-valve top end of the Grom
Longer stroke and higher compression
Actual oil filter
Different stator/generator, but same output (190w)
The JA55 CKP (crankshaft position) sensor outputs an AC waveform (analog), while the JA65 CKP sensor outputs a square-wave signal (digital).
Lower maximum RPM?
Transmission:
Now has helical cut primary gear (quieter)
Gear position sensor is wired to read all gears from the shift drum rather than just Neutral. This allows the gear indicator accessory that is available in Japan to work. (Most likely won't work on USDM models since it uses a different transmission. And unconfirmed what other market bikes the accessory will work on)
Stock sprocket set up is now 14t-39t, up from 14t-40t
Suspension:
New preload adjustment on rear
Longer swingarm
Smaller Changes:
Different exhaust pipe
Different kick start lever
Different gear shift foot lever
Larger side stand foot
Different side stand kill switch and wiring
Reinforced center stand
Updated protection bars
Aesthetics:
New body plastics
Rear rack is now black regardless of body colour
Some additional accessory attachment points in some regions
Updated Honda logo stickers now with black shadow backdrops instead of white
Significant parts with new numbers from P to S:
Cam chain guide
Primary clutch weights
Inner clutch discs
Right side case
Crank sensor
Crank sensor plate
Throttle body
TPS
Fuel injector
ABS modulator
Front fork boots
Exhaust
Rear shocks
Rectifier
Wire harness
FI computer
Thank you to dmonkey and bt619
Sources:
www.facebook.com
I've seen many threads talking about specific differences, I think we should have a general thread, a single place people can go to. I see people asking all the time
I remember seeing an excellent site that listed everything different, but I've just spent 2 hours search and can't find it again.
Things like: Engine, plastics, oil filter, longer wheel base, stock gearing, apparently the ja65 has a transmission sensor built in but no display? And much more
These are all things I've read in different places, but can't remember when or where. Especially things like the ja65 having the new ECU plug, could open options for easy cluster swaps, but to even find that the updated trail has a different plug is extremely buried.
------------------------------------------------------------------------------------------
JA55 to JA65 changes (not complete).
All information is as accurate as I think I can make it, but by no means does that mean is 100% correct.
Generally is about non-USA models. Will be updated as the list becomes more complete
New engine: (Now meets Euro5)
Engine combines the bottom end (with redesigned crankcases) from the Japanese-market C110 with the SOHC, two-valve top end of the Grom
Longer stroke and higher compression
Actual oil filter
Different stator/generator, but same output (190w)
The JA55 CKP (crankshaft position) sensor outputs an AC waveform (analog), while the JA65 CKP sensor outputs a square-wave signal (digital).
Lower maximum RPM?
Transmission:
Now has helical cut primary gear (quieter)
Gear position sensor is wired to read all gears from the shift drum rather than just Neutral. This allows the gear indicator accessory that is available in Japan to work. (Most likely won't work on USDM models since it uses a different transmission. And unconfirmed what other market bikes the accessory will work on)
Stock sprocket set up is now 14t-39t, up from 14t-40t
Suspension:
New preload adjustment on rear
Longer swingarm
Smaller Changes:
Different exhaust pipe
Different kick start lever
Different gear shift foot lever
Larger side stand foot
Different side stand kill switch and wiring
Reinforced center stand
Updated protection bars
Aesthetics:
New body plastics
Rear rack is now black regardless of body colour
Some additional accessory attachment points in some regions
Updated Honda logo stickers now with black shadow backdrops instead of white
Significant parts with new numbers from P to S:
Cam chain guide
Primary clutch weights
Inner clutch discs
Right side case
Crank sensor
Crank sensor plate
Throttle body
TPS
Fuel injector
ABS modulator
Front fork boots
Exhaust
Rear shocks
Rectifier
Wire harness
FI computer
Thank you to dmonkey and bt619
Sources:
HONDA CT125 | 今回は エンジン始動前の最終調整で 一番肝心なクランク角センサーの調整を行います | Facebook
今回は エンジン始動前の最終調整で 一番肝心なクランク角センサーの調整を行います ハンターカブ JA55とJA65の違いはこの部分が大きいですね JA55はアナログの交流波形でJA65はデジタルの矩形波です オシロスコープでクランキング中のクランク角センサー信号をモニターすると 綺麗に信号が出力されていますね！ これなら EMSでも問題なく拾えると思います
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The 2025 CT125 Experience
Starting a thread on my experience getting the 2025 model in Japan. I showed up at the local Honda shop to buy a CT125 and behold they don't have any. This is normal, but new bikes are only a day or two away if you want one. He said that wasn't happening and they are hard to find. There were...
hondatrail125.com
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