139QMA/B Cylinder Head Non SLS version
Quick Overview
Cylinder Head for 139QMA/B engines.
Complete cylinder head for 50cc 139QMB / QMA engines. Unlike many other available cylinder heads, this is a complete head. That means: valves, valve springs, valve shaft seals etc. This head is ready to install, with no need for grinding valves or fumbling with springs, or specialist tools.
Dispatched without SLS. This can be blanked off, which leads to quieter running and slightly more torque.
Valve length: 64mm
Cam shaft and rocker arm assembly not included. Delivery as shown. Please note: For Sym scooters this kit is only suitable for the GY6 139QMB engine version and not the XS1P139QMB, AV05W or AW05W engine or the Sym Symply 2 models
Make
Model
Baotian BTM
BT49QT-9 SprintBT49QT-12E RockyBT49QT12A1-RebelBT49QT-11 RetroBT49QT-7BT49QT-12D HeroBT49QT-12F TancoBT49QT-12GBT49QT-12P1 TigerBT49QT-2A Big PantherBT49QT-2C FalconBT49QT-3BT49QT-6A1BT49QT-6A4BT49QT-6B1BT49QT-6B4BT49QT-9F1 EagleBT49QT-9F3 Eagle BT49QT-21 Monza
Pulse
Scout 50 (BT49QT-9)Rhythm 50 (SB50QT-16)Lightspeed 50 4T (HT50QT-25)
Huation
HT50QT-10HT50QT-16HT50QT-22HT50QT-25HT50QT-26HT50QT-36HT50QT-6HT50QT-7HT50QT-9
Jinlun
JL50QT-4JL50QT-5 Fighter
JM Star
Accipiter 50 4T JSD50QT-21CBreeze 50 4T JSD50QT-13Eagle 50 4T JSD50QT-21Falcon 50 4T JSD50QT-21ASunfire Racing 50 4T JSD50QT-27Z-Bike 50 4T JSD50QT-15Zeus 50 4T JSD50QT-5
Longjia
LJ50QT-E 4T
Sukida
Dolphin 50Roma 50 (SK50QT-9)Venus 50Sprint-10 50 (SK50QT-A)
Lexmoto
Echo 50 (LJ50QT-3L)Echo 50 E4 LJ50QT-5LFM 50 (WY50QT-111)FMR 50 (WY50QT-58R)Flash 50 (ZN50QT-15A)Milano 50 (FT50QT-27)Molly 50 (DFE50QT-3)Scout 49 (BT49QT-9LEX)Tommy 50 (ZN50QT-A)Tommy 50 (ZN50QT-E)Tornado 50 (SB50QT-16(B08)Valencia 50 (ZN50QT-K)
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