Discontinued
Piston Kit 139QMA 139QMB
Code: PSTK049 PLU: 8956 EAN: 5057645005094 Piston Diameter: 39mm Gudgeon Pin Diameter: 13mm Height (Including Skirt): 33mm Height (Excluding Skirt): 30mm
Description

A piston kit for a motorcycle typically includes all the essential components needed for piston replacement or upgrade. It generally comprises:

  • Piston: The main component that moves up and down within the cylinder, transferring combustion forces to the crankshaft.
  • Piston Rings: Seals that fit into grooves on the piston to prevent gas leaks and control oil consumption.
  • Piston Pin: Also known as the wrist pin, it connects the piston to the connecting rod.
  • Circlips: Small retaining clips that hold the piston pin in place within the piston.


  • These components are often made from high-strength materials designed to withstand the engine's operating conditions. A piston kit ensures smooth engine operation, proper compression, and efficient performance by providing a complete set of parts for effective piston function and maintenance.

    Compatibility
    Manufacturer Model Diagram
    AJS Modena 50 [ZN50QT-27]
    Alisze FX50 50 CDI [YY50QT-15(ALISZE)]
    Jazy 50 CDI [YY50QT-21(ALISZE)]
    Axory Rallox [JSD50QT-13(AXORY)]
    BTM BT49QT-9
    BT49QT-12
    Sprint
    Baotian Apollo 10 [BT49QT-9(A10)]
    Apollo 12 [BT49QT-9(A12)]
    BT49QT-9
    BT49QT-12
    BT50QT-9
    Chase 49 [BT49QT-7]
    Eagle 50 [BT49QT-9F3]
    Eagle 50 GT [BT49QT-9F3(GT)]
    Monza 50 [BT49QT-21A3]
    Rebel 49 [BT49QT-12C1]
    Rocky [BT49QT-12E1]
    Scout 50
    Tanco 50 2
    Tommy 50 [BT49QT-11]
    Beeline Veloce GT Race
    Veloce GT [VELOCEGT]
    Benero BT49QT-9
    Benzhou YY50QT
    YY50QT-10
    YY50QT-14
    YY50QT-15
    YY50QT-21
    CTM CTM50QT-7
    Chituma CTM50QT-7
    Direct Bikes 50cc Milan E3 [DB50QT-30A]
    50cc Ninja
    50cc Ninja E3 [DB50QT-15B]
    50cc Retro
    50cc Scorpion E3 [DB50QT-32A]
    50cc Sports
    50cc Tommy E3 [DB50QT-E]
    50cc Viper
    50cc Viper E3 [DB50QT-32]
    DB50QT-16
    Eurocka MATADOR 50 4T LED [JJ50QT-17(EUROCKA)]
    Flex Tech Cityliner 50 [BT50QT-9(FLEX TECH)]
    Firenze 25/50 [YY50QT-21(FT)]
    Hurrican X2 [JL50QT-4(FLEX TECH)]
    Jive [BT49QT-11(FLEX TECH)]
    Panter I [JL50QT-4(FT)]
    Sprint 50 [BT49QT-9(FLEX TECH)]
    Topdrive 50 [YY50QT-14(FT)]
    VRR-50 [YY50QT-10C]
    Venus II [HT50QT-6(FLEX TECH)]
    Guoben Madness 50 [LB50QT-21]
    Haizhimeng GP1 (4 Stroke)
    LB50QT-21
    Hanglong HL50QT-16
    LB50QT-16
    LB50QT-21
    Haotian Bubble 50 [HT50QT-9]
    Huatian HT50QT-10
    HT50QT-16
    Sport 50cc
    IMF Industrie New Pach 51 [NEWPACH51]
    Pach 51 [PACH51]
    Two 4 [TWO4]
    JMSTAR JSD50QT-13
    Jack Fox City Star [YY50QT(JF)]
    Retro Cruiser [YY50QT-21(JF)]
    Retro Star [YY50QT-15(JF)]
    Jiajue MATADOR 50 [JJ50QT-17A]
    Revenge [JJ50QT-3]
    Revenge [JJ50QT-3(A)]
    Jinlun JL50QT-5
    JL50QT-6
    JL50QT-7
    Jonway Agility 50 [YY50QT-6]
    Madness 50 [YY50QT-31]
    Keeway HURRICANE 50 (4T) [HURRICANE (4T)]
    Leike 50GY-2
    Lexmoto Echo 50 [LJ50QT-3L] View parts diagram
    FM 50 [WY50QT-111] View parts diagram
    FMR 50 [WY50QT-58R]
    Flash 50
    Milano 50 [FT50QT-27] View parts diagram
    Molly 50 [DFE50QT-3]
    Scout 49 [BT49QT-9LEX] View parts diagram
    Tommy 50
    Tommy 50 [ZN50QT-E]
    Tornado 50
    Valencia 50 [ZN50QT-K] View parts diagram
    Vienna 50 [WY50QT-110] View parts diagram
    Lifan Aero 50 (4T) [LF50QT-26]
    Jet 50 [LF50QT-2A]
    LF50QT-8D
    Lingben LB50QT-21
    Lintex HT50QT-12
    HT50QT-16
    HT50QT-33
    Longjia LJ50QT-3L
    LJ50QT-3M
    MKS Ecobike Panter I [BT50QT-9(MKS)]
    Moto Zeta Rally 50 SC [RALLYSC]
    Nova Motors City Star [YY50QT(NM)]
    Retro Cruiser [YY50QT-21(NM)]
    Retro Star [YY50QT-15(NM)]
    Peugeot V-Clic [V-CLIC]
    Pulse Force 50 [HT50QT-36]
    Lightspeed 2 50 [WY50QT-58]
    Lightspeed 50 [HT50QT-25]
    Phantom 50 [ZN50QT-32A]
    Rage 50 [LK50GY-2]
    Rhythm 50 [SB50QT-16]
    Scout 49 View parts diagram
    Storm 50 [HT50QT-6]
    Tanco 49
    Tanco 50
    Zoom 50 [HT50QT-7]
    Qingqi QM50QT-6A
    Razzo Tanco 50
    Recto Retro
    Rex RS450
    Rhon Phantom [LH50QT-9]
    Sanben Tornado 50 [SB50QT-16(B08)]
    Scooter Devil Blue Dragon 50-4T [YB50QT-21(SD)]
    Cruiser 50-4T [BQ50QT-40]
    Mosquito 50-4T [YY50QT(SD)]
    Warrior 50 [BQ50QT-21]
    Sinnis Falcon 50 [QM50QT-2]
    Skygo Top 1
    Urban
    Star Quad JL50QT-5
    Sukida Lutetia [SK50QT-19]
    Roma [SK50QT-9]
    Top 1 [SK50QT]
    Viper 50 [SK50QT-21]
    Superbyke MPED 50
    Tamoretti Retro 50
    Viarelli Sprint
    WK Bikes Bellissima 50 [HT50QT-12]
    GO50 [JJ50QT-3(WK)]
    Mii 50 [HT50QT-33(WK)]
    WASP 50 [JJ50QT-17(WK)]
    Wangye WY50QT-16
    WY50QT-16(B08)
    Xingyue Phoenix 50 [LLX50QT]
    Yamati GP1 (4T) [HZM50QT-16 4T]
    Yiben Hurricane 50 [YB50QT-9]
    Scout 50 [YB50QT-3]
    Storm 50 [YB50QT-6]
    YB50QT-21
    Zennco Matrix
    Zing Bikes Echo 50cc [LF50QT-8D]
    Zipp Triad
    Znen Flash 50 [ZN50QT-15A]
    Speedy Streetfighter
    Tommy 50 [ZN50QT-A]
    ZN50QT-11
    ZN50QT-E
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