píst motoru 51.00/13/17.2 90cm³  139QMB/QMA (GY6 50) 4T

pro motory 4T 50 ccm vzduchem chlazené

Čínské 4T skútry - typ motoru 139 QMB/QMA

Rozměry:

D = 51 mm

d = 13 mm

L = 36,5 mm

C = 17,2 mm

H = 2,5 mm

Délka čepu 38,00 mm

síla pístních 2ks horních kroužků 0,9 mm + 1 ks stírací

sada obsahuje :

píst

písní čep

pojistky pístního čepu

sadu pístních kroužků

použito např:

• Adamoto Cetos	50	4T
  Adamoto Civitas	150	4T
  Adamoto Faster	50	4T
  Adamoto Retro	50	4T
  Adamoto Speeder	50	4T
  ATX Motor Beskid 1	50	4T
  ATX Motor Beskid Sport	50	4T
  ATX Motor Beskid 2	50	4T
  ATX Motor Bizon	50	4T
  ATX Motor Black Edition	50	4T
  ATX Motor Condor	50	4T
  ATX Motor Dolphin	50	4T
  ATX Motor Max	50	4T
  ATX Motor Milano	50	4T
  ATX Motor Orzeł	50	4T
  ATX Motor Red Power	50	4T
  ATX Motor Roma 1	50	4T
  ATX Motor Roma 2	50	4T
  ATX Motor Sharp	50	4T
  ATX Motor Top Speed	50	4T
  ATX Motor Torino	50	4T
  ATX Motor Wind	50	4T
  Azel Aries 50 4T	49	4T	2009-2010
  AZT Motor ATZ Euroscooter	50	4T
  Baccari Flash	50	4T
  Baccari X-Flash	50	4T
  Baccari Zondar	50	4T
  Baotian BT49QT-11DA	49	4T	2008-2014
  Baotian BT49QT-12C1 Rebel	49	4T	2006-2014
  Baotian BT49QT-12D1 Hero	49	4T	2007-2014
  Baotian BT49QT-12E3 Rocky	49	4T	2007-2014
  Baotian BT49QT-12F1 Tanco	49	4T	2007-2014
  Baotian BT49QT-12G1	49	4T	2009-2014
  Baotian BT49QT-12P1 Tiger	49	4T	2008-2014
  Baotian BT49QT-2A Big Panther	49	4T	2006-2014
  Baotian BT49QT-2C Falcon	49	4T	2009-2014
  Baotian BT49QT-3	49	4T	2005-2008
  Baotian BT49QT-6A1	49	4T	2009-2014
  Baotian BT49QT-6A4	49	4T	2013-2014
  Baotian BT49QT-6B1	49	4T	2009-2014
  Baotian BT49QT-9 Sprint	49	4T	2006-2013
  Baotian BT50QT-11 Retro 1 plaza	49	4T	2005-2007
  Barton 21	50	4T
  Barton Atomic	50	4T
  Barton Challenger	50	4T
  Barton Citizen	50	4T
  Barton Fox	50	4T
  Barton GTR 2	50	4T
  Barton GTR 1	50	4T
  Barton Huragan 2,3,4,5	50	4T
  Barton Pony	50	4T
  Barton Rebel	50	4T
  Barton Tiger	50	4T
  Benda Beauty	50	4T
  Benda Benson	50	4T
  Benda Buzzard	50	4T
  Benda Grace	50	4T
  Benda Hero	50	4T
  Benda Hunter	50	4T
  Benda Origin	50	4T
  Benda Owl	50	4T
  Benda Royal	50	4T
  Benda Salsa	50	4T
  Benda Smart	50	4T
  Benda Vento	50	4T
  Benda Wind	50	4T
  Benda Young	50	4T
  Benzer Barnet GP	50	4T
  Benzer Columbia	50	4T
  Benzer Dacota	50	4T
  Benzer Florida	50	4T
  Benzer Indiana	50	4T
  Benzer Mastic	50	4T
  Benzer Oregon	50	4T
  Benzer Syracuse	50	4T
  Boxter Binq	50	4T
  Boxter Comandos	50	4T
  Boxter Extreme	50	4T
  Boxter Fusion	50	4T
  Boxter Galox	50	4T
  Boxter GP	50	4T
  Boxter Mascot	50	4T
  Boxter Maxis	50	4T
  Boxter Racer	50	4T
  Boxter Sprinkler	50	4T
  Citi Bike I	50	4T
  Citi Bike II	50	4T
  Citi Bike Sport	50	4T
  Corser ZN50QT-15C	50	4T
  Corser ZN50QT-15C S	50	4T
  Corser ZN50QT-15D	50	4T
  Corser ZN50QT-15E	50	4T
  Dynamic Twister	50	4T
  Ecobike BT50QT-7 50 4T Panther II	49	4T	2005-2007
  Ecobike BT50QT-9N 50 4T Speedy	49	4T	2007-2010
  Eppella/ECM GMX 1	50	4T
  Faspider Roma	50	4T
  Ferro 301	50	4T
  Ferro 302	50	4T
  Ferro 303	50	4T
  Ferro 601	50	4T
  Ferro 602	50	4T
  Ferro 603	50	4T
  Ferro 604	50	4T
  Ferro 605	50	4T
  Fly Scooters IL Bello	50	4T
  Futong FT50QT-10	50	4T
  Futong FT50QT-14	50	4T
  Futong FT50QT-3	50	4T
  Futong FT50QT-3F	50	4T
  Futong FT50QT-7C	50	4T
  Futong FT50QT4	50	4T
  FYM FY50QT-5	50	4T
  Gateway Speedy	50	4T
  GB Motors Beast 1	50	4T
  GB Motors Blade 1	50	4T
  GB Motors Cyclone 1	50	4T
  GB Motors First 1	50	4T
  GB Motors Neox 1	50	4T
  GB Motors Pinacolada 1	50	4T
  GB Motors Razor 1	50	4T
  GB Motors Rocket 1	50	4T
  GB Motors Spark 1	50	4T
  GB Motors Thunder 1	50	4T
  GB Motors Tiger Max 1	50	4T
  GB Motors Virus 1	50	4T
  Horn Aquilla	50	4T
  Horn Ferrara 2	50	4T
  Horn Ferrara 1	50	4T
  Horn Freccia	50	4T
  Horn Grizzly	50	4T
  Horn Marcello	50	4T
  Horn Otello	50	4T
  Horn Roma	50	4T
  Horn Trendy	50	4T
  Horn Ultimo 2	50	4T
  Horn Ultimo	50	4T
  Horn Ultimo	50	4T
  Impexta Clea	50	4T
  Impexta Desire	50	4T
  Impexta Speedy E	50	4T
  Inca Sprint	50	4T
  Inca Wiki	50	4T
  Jinlun JL50QT-4	49	4T	2008-2013
  Jinlun JL50QT-5	49	4T	2005-2013
  Jinlun JL50QT-5B	49	4T	2008-2011
  Jinlun JL50QT-5C	49	4T	2008-2011
  Jinlun JL50QT-6	49	4T	2008-2013
  Jinlun JL50QT-6A	49	4T	2010-2013
  Jinlun JL50QT-6C	49	4T	2010-2011
  Jinlun JL50QT-6D	49	4T	2010-2011
  Jinlun JL50QT-7	49	4T	2008-2013
  Jinlun JL50QT-8	49	4T	2008-2013
  Jinlun JL50QT-9	49	4T	2009-2013
  Jmstar Accipiter 50 4T	49	4T	2009	JSD50QT-21C
  Jmstar Breeze 50 4T	49	4T	2008-2012	JSD50QT-13
  Jmstar Falcon 50 4T	49	4T	2009-2014	JSD50QT-21
  Jmstar Z-Bike 50 4T	49	4T	2009	JSD50QT-15
  Junak 106	50	4T
  Junak 304	50	4T
  Junak 607	50	4T
  Junak Vintage	50	4T
  Karcher KM	50	4T
  Kentoya Sole Mio	50	4T
  Kentoya Zoom	50	4T
  Kingway Aeon	50	4T
  Kingway Alien	50	4T
  Kingway Allegro	50	4T
  Kingway Black Horse	50	4T
  Kingway Camaro	50	4T
  Kingway Cereno	50	4T
  Kingway Chinaboy	50	4T
  Kingway Cobra	50	4T
  Kingway Cobus	50	4T
  Kingway Coliber Sport	50	4T
  Kingway Coliber Rex	50	4T
  Kingway Coliber Classic	50	4T
  Kingway Coliber 1	50	4T
  Kingway Coliber Smartt	50	4T
  Kingway Coliber Fartt	50	4T
  Kingway Commander	50	4T
  Kingway Condor	50	4T
  Kingway Corvette	50	4T
  Kingway Crossfire	50	4T
  Kingway Cub Sport	50	4T
  Kingway Cub Cuba	50	4T
  Kingway Cub Father	50	4T
  Kingway El Passo	50	4T
  Kingway Falcon	50	4T
  Kingway Fennari	50	4T
  Kingway Fiesta	50	4T
  Kingway Fonero	50	4T
  Kingway Forever	50	4T
  Kingway Fox	50	4T
  Kingway Gallus	50	4T
  Kingway Guliver	50	4T
  Kingway Hooligan	50	4T
  Kingway Ibis	50	4T
  Kingway Koyot	50	4T
  Kingway Martinelli	50	4T
  Kingway Maximus	50	4T
  Kingway Mosquito	50	4T
  Kingway Paulo	50	4T
  Kingway Poster	50	4T
  Kingway Quattro	50	4T
  Kingway Qurier	50	4T
  Kingway Rocky	50	4T
  Kingway Shark	50	4T
  Kingway Street	50	4T
  Kingway Swift	50	4T
  Kingway Tiggero	50	4T
  Kingway Tommy	50	4T
  Kingway Touran	50	4T
  Kingway Varadero	50	4T
  Kingway Vezyr	50	4T
  Kingway Yuxin	50	4T
  Kingway Zibo	50	4T
  Kinroad (Xintian) Delfin	50	4T
  Kinroad (Xintian) XT50QT-2	50	4T
  Kinroad (Xintian) XT50QT-2A (10 cali)	50	4T
  Kinroad (Xintian) XT50QT-2A (12 cali)	50	4T
  Kymco People 50 S 4T	49	4T	2007-2013	B91000
  Lingben LB50QT-16	50	4T
  Lingben LB50QT-18	50	4T
  Lingben LB50QT-20	50	4T
  Lingben LB50QT-35	50	4T
  Lingben LB50QT-6	50	4T
  Longjia LJ50QT-E 50 4T	49	4T	2010-2013
  Maver Action	50	4T
  Maver Swing	50	4T
  Mawi City Spider	50	4T
  Mawi Speed Racer	50	4T
  Mawi Street Race	50	4T
  Mawi Super Power	50	4T
  Moto Magnus Capro	50	4T
  Moto Magnus Carave	50	4T
  Moto Magnus Ibizzo	50	4T
  Moto Magnus Rally	50	4T
  Moto Magnus Retro	50	4T
  Moto Magnus Solatio	50	4T
  Moto Magnus Subire	50	4T
  Moto Magnus Verso	50	4T
  Moto Ventus Camera	50	4T
  Moto Ventus Grand	50	4T
  Moto Ventus Grando	50	4T
  Moto Ventus Modo 2	50	4T
  Moto Ventus Modo 1	50	4T
  Moto Ventus Prymus 1	50	4T
  Moto Ventus Prymus 2	50	4T
  Moto Ventus Rally	50	4T
  Moto Ventus Skyline	50	4T
  Moto Ventus Sport	50	4T
  Moto Zeta Rally	50	4T
  Motobi Flaming	50	4T
  Motobi Orlik 1	50	4T
  Motobi Orlik 2	50	4T
  Motobi Rocky	50	4T
  Motobi Sowa 1	50	4T
  Motobi Sowa 2	50	4T
  Motobi Spider	50	4T
  Motobi Sprint 2	50	4T
  Motobi Sprint 1	50	4T
  Motobi Wilga 3	50	4T
  Motobi Wilga 2	50	4T
  Motobi Wilga 1	50	4T
  Motobi Żbik 2	50	4T
  Motobi Żbik 1	50	4T
  Motomar Blade	50	4T
  Motomar Forester	50	4T
  Motomar Hero	50	4T
  Motomar Master 2	50	4T
  Motomar Master 1	50	4T
  Motomar Radi	50	4T
  Motomar Rocky	50	4T
  Motomar Supremo	50	4T
  Motomar Todi	50	4T
  Motomar Vision 1	50	4T
  Motomar Vision 2	50	4T
  Motomar Yazoo	50	4T
  Motorro Clea	50	4T
  Motorro Cobi	50	4T
  Motorro Desire	50	4T
  Motorro Hawk	50	4T
  Motorro Speedy E	50	4T
  Motoway VX 5 City	50	4T
  Motoway XR 7	50	4T
  Motowell Yoyo 50 4T	49	4T	2010-2014
  Peda Rally	50	4T
  Peda Via Warrior	50	4T
  Qingqi (Jinan Qingqi) QM50QT-10A	50	4T
  Qingqi (Jinan Qingqi) QM50QT-6A Capriolo	50	4T
  Qingqi (Jinan Qingqi) QM50T-10A B	50	4T
  Qingqi (Jinan Qingqi) QM50T-10R	50	4T
  Qingqi (Jinan Qingqi) RS 400	50	4T
  Qingqi (Jinan Qingqi) RS 450	50	4T
  Qingqi (Jinan Qingqi) RS 460	50	4T
  Qingqi (Jinan Qingqi) RS 900 QM50T-10A (A)	50	4T
  Quest Q2 1	50	4T
  Quest Q3	50	4T
  Quest Q3 1	50	4T
  Quest Q5	50	4T
  Quest Q7 1	50	4T
  Quest Q7	50	4T
  Quest Q9 1	50	4T
  Quest Q9	50	4T
  Rieju Paseo 50 4T	50	4T	2007-2008
  Rieju Toreo 50 4T	49	4T	2007-2008
  RM Motor Blade	50	4T
  RM Motor Fox	50	4T
  RM Motor Oxygen	50	4T
  RM Motor Pepper	50	4T
  RM Motor RS	50	4T
  RM Motor Viper	50	4T
  Romet 717 2010-	50	4T
  Romet 717 -2010	50	4T
  Romet 727	50	4T	2008
  Romet 727 JOY	50	4T
  Romet 727 Komfort	50	4T
  Romet 727 Premium	50	4T
  Romet 747	50	4T
  Romet 757	50	4T
  Romet 767 -2010	50	4T
  Romet 777	50	4T
  Romet 787	50	4T
  Romet Delivery	50	4T
  Romet Latte City	50	4T
  Romet Retro 6	50	4T
  Romet Retro 7	50	4T
  Router Bassa	50	4T	2012
  Router Bassa	50	4T	2011
  Router City Line	50	4T
  Router Classa	50	4T
  Router Grande Lux	50	4T
  Router Metro City	50	4T
  Router Pluss	50	4T
  Router Retro VSP	50	4T
  Router Sport S	50	4T
  Router Traffico 2	50	4T
  Router Traffico XM	50	4T
  Router Traffico XS	50	4T
  Router XM	50	4T
  Sukida Dolphin	50	4T
  Sukida Roma	50	4T
  Sukida Sprint 10	50	4T
  Sukida Sprint 12	50	4T
  Sukida Venus	50	4T
  TaoTao ATM	50	4T
  TNT Roma	50	4T
  Toros Eco	50	4T
  Toros el Diablo	50	4T
  Toros el Loco	50	4T
  Toros F16	50	4T
  Toros Fresco	50	4T
  Toros GP500	50	4T
  Toros Steed	50	4T
  Toros X7	50	4T
  Ultimar Speed	50	4T
  Xinling XL50QT-B	50	4T
  Xintian XT50QT	50	4T
  Yukimoto Dragon	50	4T
  Yukimoto Drakiwa	50	4T
  Yukimoto Pride	50	4T
  Yukimoto Rally	50	4T
  Yukimoto Ruby	50	4T
  Yukimoto Shotgun	50	4T
  Yukimoto Speedy	50	4T
  Yukimoto Whip	50	4T
  Zhongyu Zhongyu	50	4T
  Zipp Astec	50	4T
  Zipp Basic	50	4T
  Zipp Otis	50	4T
  Zipp Rally	50	4T
  Zipp Steed	50	4T
  Zipp Tops	50	4T
  Zipp Toxic	50	4T
  Zipp Triad II	50	4T
  Zipp Triad I	50	4T
  Zipp Vapor	50	4T	2007-2008
  Zipp Vapor	50	4T	2011-
  Zipp Vega	50	4T
  Zumico Avatar	50	4T
  Zumico Dynamic	50	4T
  Zumico Mac	50	4T

• ATU City Star (YY50QT)
• ATU Formula 2000 (YY50QT-6A)
• ATU Formula One (YY50QT-6)
• ATU Level 100 (ZS50QT)
• ATU Retro Star (YY50QT-15)
• ATU Wild Eagle (ZS50QT)

• Baja BE500 50 4T
• Baja Suncity SC50 4T VIN LAW / LXKS
• Baja Suncity SC50 4T VIN LWGT
• Baotian BT49QT-11 Retro
• Baotian BT49QT-12A1 Rebel
• Baotian BT49QT-12C1
• Baotian BT49QT-12D Hero
• Baotian BT49QT-12E Rocky
• Baotian BT49QT-12F Tanco
• Baotian BT49QT-12G
• Baotian BT49QT-12P1 Tiger
• Baotian BT49QT-20A2
• Baotian BT49QT-2A Big Panther
• Baotian BT49QT-2C Falcon
• Baotian BT49QT-3
• Baotian BT49QT-6A1
• Baotian BT49QT-6A4
• Baotian BT49QT-6B1
• Baotian BT49QT-6B4
• Baotian BT49QT-7 Smart Rider
• Baotian BT49QT-9 Sprint
• Baotian BT49QT-9F1 Eagle
• Baotian BT49QT-9F3 Eagle
• Baotian BT49QT-9R1
• Baotian BT49QT-9R3
• Baotian BT49QT-9S1
• Baotian BT49QT-9S3
• Baotian BT50QT-11 Retro
• Baotian BT50QT-9 Ecobike
• Benzhou City Star (YY50QT)
• Benzhou Formula 2000 (YY50QT-6A)
• Benzhou Formula One (YY50QT-6)
• Benzhou Retro Star (YY50QT-15)
• Benzhou YY50QT-14
• Benzhou YY50QT-26
• Buffalo Wind 50

• Cyborg ACE 50ccm
• Cyborg ECO 50ccm
• Cyborg Retro 50ccm
• Cyborg Tanco 50ccm
• Cyborg Zen 50ccm
• Cyborg Zest 50ccm

• Dazon Diamondback 50 4T

• Eppella GMX 50 4-Takt
• Ering Smart Rider 50

• Flex Tech Dolphin 50 4T
• Flex Tech Fun 50 4T
• Flex Tech Hurrican X1 4T (JL50QT-4)
• Flex Tech Hurrican X2 (YY50QT-26)
• Flex Tech Sprint-10 50 (SK50QT-A)
• Flex Tech Sprint-12 50 (SK50QT-B)
• Flex Tech Topdrive 50 (YY50QT-14)
• Flex Tech Venus 50
• Fly Scooters IL Bello 50 4T

• Gorilla Motor Works Black Jack 50 4T

• Huatian HT50QT-10
• Huatian HT50QT-16
• Huatian HT50QT-22
• Huatian HT50QT-25
• Huatian HT50QT-26
• Huatian HT50QT-36
• Huatian HT50QT-6
• Huatian HT50QT-7
• Huatian HT50QT-9

• Jinlun Fighter 50 (JL50QT-5)
• Jinlun JL50QT-4
• Jmstar Accipiter 50 (JSD50QT-21C) 4T
• Jmstar B09 Sunfire Racing 50 (JSD50QT-27) 4T
• Jmstar Breeze 50 (JSD50QT-13) 4T
• Jmstar Eagle 50 (JSD50QT-21) 4T
• Jmstar Falcon 50 (JSD50QT-21A) 4T
• Jmstar Sunny 50 (JSD50QT-27) 4T
• Jmstar Z-Bike 50 (JSD50QT-15) 4T
• Jmstar Zeus 50 (JSD50QT-15C) 4T
• Jonway Beta 50 4T
• Jonway Lambda YY50QT-21 50 4T
• Jonway YY50QT-6 4T

• Karcher KM 50 4-Takt
• Kentoya Apachee 50 4T
• Kentoya City One 50 4T
• Kentoya Extra 50 4T
• Kentoya Powermax 50 4T
• Kentoya Sole Mio 50 4T
• Kentoya Speed 50 4T
• Kentoya Zoom 50 4T
• Kingway Alien 50
• Kingway Black Horse 50
• Kingway Camaro 50
• Kingway Cereno 50
• Kingway Chinaboy 50
• Kingway Cobra 50
• Kingway Coliber 50
• Kingway Coliber Allegro 50
• Kingway Coliber Classic 50
• Kingway Coliber Fartt 50
• Kingway Coliber Rex 50
• Kingway Coliber Smartt 50
• Kingway Coliber Sport 50
• Kingway Condor 50
• Kingway Corvette 50
• Kingway El Passo 50
• Kingway Falcon 50
• Kingway Fonero 50
• Kingway Forever 50
• Kingway Fox 50
• Kingway Gallus 50
• Kingway Guliver 50
• Kingway Hooligan 50
• Kingway Ibis 50
• Kingway Koyot 50
• Kingway Martinelli 50
• Kingway Mosquito 50
• Kingway Paulo 50
• Kingway Poster 50
• Kingway Quattro 50
• Kingway Rocky 50
• Kingway Shark 50
• Kingway Swift 50
• Kingway Tanco 50
• Kingway Tiggero 50
• Kingway Tommy 50
• Kingway Touran 50
• Kingway Varadero 50
• Kingway Yuxin 50
• Kingway Zibo 50
• Kreidler Flory 50 4-Takt
• Kreidler RMC E50 4-Takt
• Kymco Agility 50 4T KG10SA
• Kymco Agility 50 Basic 4T KD10SH
• Kymco Agility 50 Carry 4T KG10DA
• Kymco Agility 50 City 4T KL10BA
• Kymco Agility 50 MMC 4T KG10C
• Kymco Agility 50 One 4T KG10SD
• Kymco Agility 50 RS 4T KG10S
• Kymco DJ 50 S KG10B
• Kymco Filly 50 4T SD10AC
• Kymco KYMCOSento 50
• Kymco Like 50 4T KG10AA
• Kymco People S 50
• Kymco Super 8 50 4-Takt
• Kymco Vitality 50 4T
• Kymco Yager 50 GT

• Longbo LB50QT-22 50 4T
• Longbo LB50QT-6 50 4T
• Longjia LJ50QT-E 4T

• Massimo SL50QT-2 50 4T
• Mawi City Spider 50 4T
• Mawi Speed Racer 50 4T
• Mawi Street Race 50 4T
• Mawi Super Power 50 4T
• Moto Zeta Rally 50
• Motofino MF50QT 50 4T
• Motofino MF50QT-2 50 4T
• Motofino MF50QT-7 50 4T
• Motorro Clea 50 (4T)
• Motorro Cobi 50 (4T)
• Motorro Desire 50 (BT49QT-12)
• Motorro Hawk 50 (4T)
• Motortek (ATU) Raccoon
• Motowell Magnet 4T
• Motowell Retrosa 50
• Motowell Yoyo

• Peugeot V-CLIC
• Pulse BT49QT-9 Scout
• Pulse SB50QT-16 Rhythm
• Puma Juliet 50 4T
• Puma La Vida 50 4T
• Puma Romeo 50 4T

• REX (Jinan Qingqi) Capriolo 50 [QM50QT-6A]
• REX (Jinan Qingqi) RS 400
• REX (Jinan Qingqi) RS 450 [QM50QT-6A]
• REX (Jinan Qingqi) RS 460
• REX (Jinan Qingqi) RS 500 [QM50QT-6A(A)]
• REX (Jinan Qingqi) RS 900 [QM50T-10A(A)]
• Rieju Paseo 50
• Rieju Toreo 50
• Roketa Bahama MC-07 50 4T
• Roketa Maui MC-08 50 4T

• Sachs 49er (FY50QT-5)
• Sachs Bee 50 (FY50QT-13)
• Schwinn Hope 50 4T
• Schwinn Laguna 50 4T
• Schwinn Newport 50 4T
• Sukida Dolphin 50
• Sukida Roma 50 (SK50QT-9)
• Sukida Sprint-10 50 (SK50QT-A)
• Sukida Sprint-12 50 (SK50QT-B)
• Sukida Venus 50
• SunL SL50QT-2 50 4T
• SunL SL50QT-7 50 4T

• Tank Sporty 50 4T
• Tank Urban 50 4T
• TNG Low Boy 50 4T

• Xinling XL50QT-B
• Xintian (Kinroad) XT50QT

• Zhongyu ZY50QT-7
• Zongshen ZS50QT-4 (Cab 50)