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 Original Equipment (Not Koso) Roller Rocker Arms 
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Post Original Equipment (Not Koso) Roller Rocker Arms
Can anyone that has actually checked valve clearance on a 2016 or newer US Zuma 125 verify that the engine does, or does not, have roller rocker arms? Parts diagram indicates non-roller.

Based on product description . . 2016 and newer Canadian BWS 125 engines have roller rockers as original equipment.


Mon Dec 18, 2017 12:36 pm
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Post Re: Original Equipment (Not Koso) Roller Rocker Arms
i never heard of roller rocker arm for factory yamaha bws/zuma 125 scooters or even other types that uses similar engines.

but then it could be possible was for export models to canada only?

however roller rocker arm has been popular the past 5 years. i sold many koso kits and also have racing type roller rocker kits used in our popular 218cc engine package.

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Wed Jan 03, 2018 3:04 am
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Post Re: Original Equipment (Not Koso) Roller Rocker Arms
Race Concept wrote:
i never heard of roller rocker arm for factory yamaha bws/zuma 125 scooters or even other types that uses similar engines.

PGO J-BuBu has roller rocker arms AND a remote oil cooler . . sold in the USA as Genuine Kick 125.


Last edited by tortoise on Thu Jan 04, 2018 7:30 am, edited 1 time in total.



Wed Jan 03, 2018 10:38 am
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Post Re: Original Equipment (Not Koso) Roller Rocker Arms
i was talking about other yamaha scooters that uses the similar engine.

Cygnus, Mio and couple more.

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Thu Jan 04, 2018 3:48 am
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