Cylinder & Pistion Kit, GY6 125cc 52.4mm 152QMI, Scooter ATV Trike Buggy

Description

ITEM DESCRIPTION:
125cc GY6 Cylinder Rebuild Kit with
52.4mm bore, 15mm wrist pin
& 54mm stud spacing,
found on various Scooters, ATVs, Sand / Dune Buggies, Trikes, etc.
IMPORTANT NOTE:
There are at least 8 variations of the GY6 125 & 150cc engine: (likely more).
Please contact me if you're not sure which engine you have, I'll help to the best of my ability.
1) The standard GY6 125cc & 150cc (152QMI & 157QMJ) engine used on 95% of GY6 applications. Make sure you have straight fins and 54mm stud spacing to be sure this
is the kit you need. This engine can use up to a 180cc big bore kit.
This listing is for this engine.
2) "QJ" GY6 125cc & 150cc engines, stamped QJ152QMI, QJ157QMJ or QJ158QMJ) manufactured by the Quingiang Company. This cylinder has slanted fins making it easy to spot
NOTE:
there are other variations that look like this one but will not work (see below).
NOTE:
Even though the stud spacing is 54mm (same as the standard engine), the other two bolts will not line up so this cylinder is not interchangeable with the standard GY6 engine.
3) Kazuma GY6: This variation is used only on Kazuma 150cc Falcon & Dingo ATVs and has engine stamp KZM157QMJ. This cylinder has wavy fins like # 2 but is unique to Kazuma.
4)
BN157QMJ, often referred to as
GY6-B or GY7, this is a Scooter engine made by BenNeng of the Zhongneng Industry Group and uses a taller head with longer valves and a 4 bolt valve cover. Cylinder has wavy fins like # 2 but is not the same. Often used on applications with 16" rear wheels but also used with smaller wheels on some applications.
5) GY6-B ATV engine stamped with the same ID # as the standard GY6 engine making this one confusing. Has reverse for use exclusively for ATV, Buggy, and Go-Cart's. The cylinder also has wavy fins like #2 but the studs are spaced 56mm apart compared to 54mm for standard GY6 engines. The head is 73mm tall head with 2 valve cover bolts making it look like #2 but the cylinder and head exclusive to this engine and almost impossible to find.
6) 161QMK factory 170cc engine with 57mm stud spacing, straight cylinder fins and a tall 73mm head with 2 bolt valve cover. Used on ATV UTV with reverse and also for scooters (without reverse of course). The 57mm stud spacing allows for big bore kits up to 232cc although I believe other mods are needed to go to 232cc. I believe you can go to 200cc without any mods. The cylinder looks like a standard GY6 except for the stud spacing and bore size.
7) "P" Engine (1P57QMJ)  This engine uses a 73mm tall head with 4 valve cover bolts. The cylinder uses 54mm stud
spacing and will interchange with the standard GY6 engine. One of my customers reported that his case opening was only 62.3mm
which means he had to bore the cases to accept a 61mm big bore kit (no way to know if they are all like this).
8) KL30F 150cc Kymco engine, used on Agility and maybe other Kymco models. I have very little info on this motor but I believe the cylinder has a different stud spacing to prevent interchange. If I can get more info I'll provide an update.
NOTE:
I literally spent days gathering this info. There is a never ending flow of contradicting info floating around the internet so I cannot guarantee this info but it is true to the best of my knowledge. If you have additional info you can provide I'll be grateful!
Partial List of Models that may use this engine: As always, carefully compare to your old parts to be sure this is the one you need.
AutoMoto:
Avanti: Epsilon
Baja:
Baron:
Bintelli: Havoc
BWS: Bemine Touring
Diamo:
Genuine: G-Max, Blur
Howhit:
Icebear: Maddog
Jonway:
JMstar:
Kinroad: XT150T-8, Avanti Beta
Kymco: Agility 125
Lancer:
Lifan: L150T-7, Lifan 125
Longbo: Spigaly
Loncin:
Mod Cycle:
NST:
Paladin:
Peace: Sports
Piaggio: GS125 scooter,
PGO:
Powermax: VIP
Primo: Terminator Primo "Strada" Streaker 150,
RAD-10
Retro:
Roman:
Strada: Strada Chrome Edition, Strada
Roketa: Tahiti MC-03, Fiji MC-04
Sunl:
Schwinn:
SYM:
Tank: Racer
TaoTao:
TNG:
Tomos:
Vento:  Phantom GT5, Phantom R4I
Verucci: Permier GTX SE, Racer, Viper GTX
Velux:
Wangye:
Wussi:
Velocity:
Velux: Retro
Zenhua:
And many more.....
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