Non-OEM part reference for 125SM

SM, SX, RT, FunX, and models re-branded as ATK in U.S.

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Non-OEM part reference for 125SM

Postby 125SMash » Sun Nov 09, 2003 2:20 pm

So far i have personally confirmed the following parts to be suitable as replacements:

Battery:
Yuasa 12N9-3A-1 -
Perfect size wise/exact replacement.
The included bolts are a little too wide, and some ring cutting may be required.
CCA rating of 80 is somewhat low.

Yuasa YB9L-A2 -
Much like the battery mention above, but with a higher CCA rating.
CCA rating of 124.

Yuasa YB10L-A2 -
The BEST possible replacement confirmed so far.
CCA rating of 160.
Dimensions are larger than that of the batteries mentioned above, but fit has been confirmed perfect (no modifications are necessary atleast on the 125SM - and SX presumably - )


Please feel free to add your own experiences with compatible parts.
Last edited by 125SMash on Wed Dec 10, 2003 10:54 pm, edited 1 time in total.
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rt125 battery information

Postby DAVID THOMPSON » Mon Nov 24, 2003 10:01 pm

hello
the rt125 replacement is interstate batteriies M3210Y = YB10L-A2
this one will crank it when it's COLD it's a tight fit
some modifycation to the side cover needed but not major
mod. details and pictures on request

i had to trim about 3 or 4 mm off of the bottom edge of the plastic
side cover and took a hair drier and removed the black cover from
the ori battery and stuck it on the new one the wires on mine were a bit
tight but will work
please note if you have trouble starting with this battery
on my bike i had a bad starter relay it clicks sounds like low battery
but relay not passing current to starter so no cranking
I HAVE HEARD THAT THIS RELAY IS KNOWN TO STICK IN THE ON
POSITION SO IT MAY BE A GOOD IDEA TO FIX SOME WAY TO DISCONNECT THE MINUS POST OF THE BATTERY IN A HURRY
TO KEEP IT FROM WRECKING THE BATTERY AND STARTER
ANYONE WHO HAS HAD THIS HAPPEN EMAIL ME
wd8cyv@yahoo.com

starter relay all 125cc MZ
yamaha relay part number 4KD-81940-00
is a direct plug in replacement on my mz rt125 about $28 usd at
aftermarket atv shop

it may also work on your mz or ujm
unhook battery when changing
rtbattery
Last edited by DAVID THOMPSON on Sat Mar 11, 2006 1:03 pm, edited 3 times in total.
Dave 2002 MZ RT125+1995 Saxon Tour(500cc)
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
of everything"
"I like the road less traveled if it's PAVED!"
wd8cyv at yahoo dot com
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Postby 125SMash » Tue Dec 02, 2003 9:57 pm

finally picked up the YB10L-A2 battery today.. will try installing it tomorrow or day after and post the results then!
2002 MZ 125SM
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Postby 125SMash » Tue Dec 02, 2003 9:59 pm

actually dave, if you do have those pics handy, id apprecaite if you droped them here.
if you would have to take them and stuff dontr bother

thanks for the 411 :D
2002 MZ 125SM
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great news!

Postby 125SMash » Wed Dec 10, 2003 10:51 pm

the YB10L-A2 is practically a drop-in.

NO MODIFICATIONS are necessary what so ever for it to fit in my 125SM.
infact due to the terminals location and type, it is actually esier to install the wires to them :)
2002 MZ 125SM
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125cc oil drain plug

Postby DAVID THOMPSON » Fri Mar 10, 2006 11:38 pm

oil drain plug 125cc

auto zone see counter person they have them at counter in a box
m18x1.5 with box head bolt .....ori was a allen i think
get copper washer for it
ar dave
Dave 2002 MZ RT125+1995 Saxon Tour(500cc)
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
of everything"
"I like the road less traveled if it's PAVED!"
wd8cyv at yahoo dot com
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Posts: 5149
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Re: rt125 battery information

Postby mxsteven » Sun Apr 09, 2006 10:21 pm

Uhh thanks for all your advise... hehe it would be the best advise...
anyway i going to buy the Yuasa YB10L-A2 battery.. coz mine are really dead now... my battery terminal heads always corrodes and im keep trying to put greese and battery greese but corrosion keeps going on till the battery terminal worn off so any idea to eliminate the problem?

on my second discovery, i found that it is best to fit a battery breaker on the bike. i fixed a 40amp ELCB and its ok... so everytime that i dont ride my bike i will trip it off so that my battery wont die easily and for safe wise it is great coz if anything happen eg: relay sticking, u can just trip it without any hassle...... if u need any good battery cables with connectors pls let me know.. i can get for u real cheap about USD10 only for grounding and to the relay with copper connectors and it's a quality cable..

email me @t mxsteven@gmail.com if you want any photo... sorry for missing quite some time coz now started to get busy on my job.

regards
mxsteven

DAVID THOMPSON wrote:hello
the rt125 replacement is interstate batteriies M3210Y = YB10L-A2
this one will crank it when it's COLD it's a tight fit
some modifycation to the side cover needed but not major
mod. details and pictures on request

i had to trim about 3 or 4 mm off of the bottom edge of the plastic
side cover and took a hair drier and removed the black cover from
the ori battery and stuck it on the new one the wires on mine were a bit
tight but will work
please note if you have trouble starting with this battery
on my bike i had a bad starter relay it clicks sounds like low battery
but relay not passing current to starter so no cranking
I HAVE HEARD THAT THIS RELAY IS KNOWN TO STICK IN THE ON
POSITION SO IT MAY BE A GOOD IDEA TO FIX SOME WAY TO DISCONNECT THE MINUS POST OF THE BATTERY IN A HURRY
TO KEEP IT FROM WRECKING THE BATTERY AND STARTER
ANYONE WHO HAS HAD THIS HAPPEN EMAIL ME
wd8cyv@yahoo.com

starter relay all 125cc MZ
yamaha relay part number 4KD-81940-00
is a direct plug in replacement on my mz rt125 about $28 usd at
aftermarket atv shop

it may also work on your mz or ujm
unhook battery when changing
Where u go, it's up to u,
Where u ride, it's in ur hand,
What u think, it's in ur mind,
Think b4 u do, Ride safe.

MXsteven
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Postby tjchick » Tue Apr 18, 2006 4:00 am

Thanks guys - I just fitted a Yuasa YB10L-A2 to mine, as the original
one had died.

It fits fine into my SM125, but is slightly wider, so the battery now touches the plastic side panel, which it did not before.

No more running jumps to start the bike! :-)
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125cc brake pads

Postby DAVID THOMPSON » Thu Jun 15, 2006 7:27 pm

brake pads 125cc some atv shops stock these as there are a few atv's
that use them

High-Performance Sintered Metal Pads, Organic Pads & Semi-Metallic Pads
Prefix: SD = Semi Metallic are available.
Suffix: JL = Sintered Metal Pad, On Road
NONE = Organic Pad *mark means 2 pieces use

Street MZ

Model Year Metal/Organic Semi Metallic
Front Rear Front Rear
RT125 02-05 VD-250/2JL VD-250/2JL SD-250/2 SD-250/2
SM125 02-05 VD-340/2 VD-250/2JL SD-340/2 SD-250/2
SX125 same as sm

http://www.vesrah.com/
Dave 2002 MZ RT125+1995 Saxon Tour(500cc)
1997 MZ 660 Traveller+6/13/09 WV USA
"IN the end times the IDIOTS will be in charge
of everything"
"I like the road less traveled if it's PAVED!"
wd8cyv at yahoo dot com
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DAVID THOMPSON
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Posts: 5149
Joined: Sun Nov 23, 2003 11:01 am
Location: Parkersburg, West Virginia USA .questions answered MZ 95 up, BMW 1953 to 1979 and ham radio WD8CYV

Re: Non-OEM part reference for 125SM

Postby OSPRNG » Thu Feb 16, 2012 3:40 pm

i saw an article for shorai batteries in cycle world, which appear to be really good, maintenance free, long lasting, charge holding batteries.
www.shoraipower.com
LFX14L2-BS12 is claimed to be a replacement for the Yuasa YB10L-A2

they are priced at a premium but if the claims are correct it may be well worth the $$
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Re: Non-OEM part reference for 125SM

Postby bharp1653 » Tue Jul 07, 2015 8:55 am

Any other replacement part numbers/ compatability would be greatly appreciated. Electrical, tires, filters...etc.
2002 MZ 125 SX

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