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thermal unit cylinder kit

Discover Polini, a historic Italian brand founded in 1945, specialising in performance kits, engines and components for motorbikes and scooters with high reliability.

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  1. FLASH PROMO
    BIKE SPECIFIC
    POLINI Racing Evolution 2 Cylinder 135 cc aluminum 6 transfers 58mm stroke 51mm with head POLINI Racing Evolution 2 Cylinder 135 cc aluminum 6 transfers 58mm stroke 51mm with head

    POLINI Racing Evolution 2 Cylinder 135 cc aluminum 6 transfers 58mm stroke 51mm with head

    POLINI

    -25%

    Special Price €399.06 Regular Price €532.08
    Add to Wish List
  2. BIKE SPECIFIC
    POLINI Evolution D.47 Thermal Group in Cast Iron POLINI Evolution D.47 Thermal Group in Cast Iron

    POLINI Evolution D.47 Thermal Group in Cast Iron

    POLINI

    -20%

    Special Price €238.10 Regular Price €297.68
    Add to Wish List
  3. BIKE SPECIFIC
    POLINI Tuning Kit Sport 177 cc cylinder head SI 24 carburetor clutch and air filter POLINI Tuning Kit Sport 177 cc cylinder head SI 24 carburetor clutch and air filter

    POLINI Tuning Kit Sport 177 cc cylinder head SI 24 carburetor clutch and air filter

    POLINI

    €742.30
    Add to Wish List
  4. BIKE SPECIFIC
    POLINI thermal group D.57.5 stroke 43 112cc cast iron cylinder POLINI thermal group D.57.5 stroke 43 112cc cast iron cylinder

    POLINI thermal group D.57.5 stroke 43 112cc cast iron cylinder

    POLINI

    -20%

    Special Price €182.00 Regular Price €227.49
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  5. BIKE SPECIFIC
    POLINI Thermal Group D.55 Stroke 43 102cc Cast Iron Cylinder POLINI Thermal Group D.55 Stroke 43 102cc Cast Iron Cylinder

    POLINI Thermal Group D.55 Stroke 43 102cc Cast Iron Cylinder

    POLINI

    -20%

    Special Price €161.40 Regular Price €201.81
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  6. BIKE SPECIFIC
    POLINI Thermal Group D.68.5 cast iron cylinder with head POLINI Thermal Group D.68.5 cast iron cylinder with head

    POLINI Thermal Group D.68.5 cast iron cylinder with head

    POLINI

    -20%

    Special Price €316.80 Regular Price €396.01
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  7. PROMO
    BIKE SPECIFIC
    POLINI 68cc cylinder made of ductile iron 47mm with cylinder head included POLINI 68cc cylinder made of ductile iron 47mm with cylinder head included

    POLINI 68cc cylinder made of ductile iron 47mm with cylinder head included

    POLINI

    -8%

    Special Price €151.60 Regular Price €163.93
    Add to Wish List
  8. BIKE SPECIFIC
    POLINI racing thermal group D.47 stroke 39.3 68cc cast iron cylinder POLINI racing thermal group D.47 stroke 39.3 68cc cast iron cylinder

    POLINI racing thermal group D.47 stroke 39.3 68cc cast iron cylinder

    POLINI

    -20%

    Special Price €197.10 Regular Price €246.39
    Add to Wish List
  9. BIKE SPECIFIC
    POLINI D.40 Thermal Group Yamaha/Mbk Booster POLINI D.40 Thermal Group Yamaha/Mbk Booster

    POLINI D.40 Thermal Group Yamaha/Mbk Booster

    POLINI

    -20%

    Special Price €144.10 Regular Price €180.08
    Add to Wish List
  10. BIKE SPECIFIC
    POLINI 75 cc cylinder in cast iron 6 transfers stroke 43mm with cylinder head included POLINI 75 cc cylinder in cast iron 6 transfers stroke 43mm with cylinder head included

    POLINI 75 cc cylinder in cast iron 6 transfers stroke 43mm with cylinder head included

    POLINI

    -12%

    Special Price €154.40 Regular Price €176.34
    Add to Wish List
  11. BIKE SPECIFIC
    POLINI Tuning Kit Sport 177 cc carburetor SI 24 COSA 2 clutch and air filter POLINI Tuning Kit Sport 177 cc carburetor SI 24 COSA 2 clutch and air filter

    POLINI Tuning Kit Sport 177 cc carburetor SI 24 COSA 2 clutch and air filter

    POLINI

    €799.20
    Add to Wish List
  12. BIKE SPECIFIC
    POLINI Thermal Group Piaggio Liberty/Vespa 50 4T 3V iGet POLINI Thermal Group Piaggio Liberty/Vespa 50 4T 3V iGet

    POLINI Thermal Group Piaggio Liberty/Vespa 50 4T 3V iGet

    POLINI

    -20%

    Special Price €242.90 Regular Price €303.63
    Add to Wish List
  13. BIKE SPECIFIC
    POLINI thermal group with D.68.5 head aluminum cylinder POLINI thermal group with D.68.5 head aluminum cylinder

    POLINI thermal group with D.68.5 head aluminum cylinder

    POLINI

    -20%

    Special Price €406.20 Regular Price €507.72
    Add to Wish List
  14. BIKE SPECIFIC
    POLINI Cylinder Group D.47 stroke 39.3 68cc cast iron cylinder POLINI Cylinder Group D.47 stroke 39.3 68cc cast iron cylinder

    POLINI Cylinder Group D.47 stroke 39.3 68cc cast iron cylinder

    POLINI

    -20%

    Special Price €155.20 Regular Price €194.05
    Add to Wish List
  15. BIKE SPECIFIC
    POLINI Engine Group D.38.4 stroke 43 49.8cc cast iron cylinder POLINI Engine Group D.38.4 stroke 43 49.8cc cast iron cylinder

    POLINI Engine Group D.38.4 stroke 43 49.8cc cast iron cylinder

    POLINI

    -20%

    Special Price €151.40 Regular Price €189.28
    Add to Wish List
  16. BIKE SPECIFIC
    POLINI Evolution D.47 Cylinder Group 12mm Pin POLINI Evolution D.47 Cylinder Group 12mm Pin

    POLINI Evolution D.47 Cylinder Group 12mm Pin

    POLINI

    -20%

    Special Price €238.10 Regular Price €297.68
    Add to Wish List
  17. BIKE SPECIFIC
    POLINI Thermal Group D.47 Stroke 43 75cc Cast Iron Cylinder POLINI Thermal Group D.47 Stroke 43 75cc Cast Iron Cylinder

    POLINI Thermal Group D.47 Stroke 43 75cc Cast Iron Cylinder

    POLINI

    -20%

    Special Price €154.40 Regular Price €192.98
    Add to Wish List
  18. BIKE SPECIFIC
    POLINI racing thermal group D.47 stroke 43 75cc cast iron cylinder POLINI racing thermal group D.47 stroke 43 75cc cast iron cylinder

    POLINI racing thermal group D.47 stroke 43 75cc cast iron cylinder

    POLINI

    -20%

    Special Price €169.20 Regular Price €211.45
    Add to Wish List
  19. BIKE SPECIFIC
    POLINI Thermal Group D.57 stroke 51 130cc cast iron cylinder POLINI Thermal Group D.57 stroke 51 130cc cast iron cylinder

    POLINI Thermal Group D.57 stroke 51 130cc cast iron cylinder

    POLINI

    -20%

    Special Price €226.40 Regular Price €283.05
    Add to Wish List
  20. BIKE SPECIFIC
    POLINI Racing Cylinder 130 cc ductile iron 7 transfers stroke 51mm with head POLINI Racing Cylinder 130 cc ductile iron 7 transfers stroke 51mm with head

    POLINI Racing Cylinder 130 cc ductile iron 7 transfers stroke 51mm with head

    POLINI

    -21%

    Special Price €226.40 Regular Price €286.03
    Add to Wish List
  21. BIKE SPECIFIC
    POLINI Cylinder Thor 250 cc 72mm stroke 60mm 2 piston rings POLINI Cylinder Thor 250 cc 72mm stroke 60mm 2 piston rings

    POLINI Cylinder Thor 250 cc 72mm stroke 60mm 2 piston rings

    POLINI

    -24%

    Special Price €403.20 Regular Price €532.08
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  22. BIKE SPECIFIC
    POLINI Thermal Group D.47 stroke 43 75cc cast iron cylinder POLINI Thermal Group D.47 stroke 43 75cc cast iron cylinder

    POLINI Thermal Group D.47 stroke 43 75cc cast iron cylinder

    POLINI

    -20%

    Special Price €149.20 Regular Price €186.44
    Add to Wish List
  23. BIKE SPECIFIC
    POLINI Thermal Group Piaggio/Vespa 125-150 4T i.e POLINI Thermal Group Piaggio/Vespa 125-150 4T i.e

    POLINI Thermal Group Piaggio/Vespa 125-150 4T i.e

    POLINI

    -20%

    Special Price €291.80 Regular Price €364.78
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  24. BIKE SPECIFIC
    POLINI Racing Cylinder 6 Port 47mm Stroke 43mm with Head for V50 1st Series POLINI Racing Cylinder 6 Port 47mm Stroke 43mm with Head for V50 1st Series

    POLINI Racing Cylinder 6 Port 47mm Stroke 43mm with Head for V50 1st Series

    POLINI

    -28%

    Special Price €149.20 Regular Price €207.10
    Add to Wish List
  25. BIKE SPECIFIC
    POLINI P140.0181/R THERMAL UNIT CYLINDER KIT POLINI P140.0181/R THERMAL UNIT CYLINDER KIT

    POLINI P140.0181/R THERMAL UNIT CYLINDER KIT

    POLINI

    €197.10
    Add to Wish List
  26. BIKE SPECIFIC
    POLINI Racing EVO 130 cc Cylinder aluminum 6 ports 57mm stroke 51mm with head POLINI Racing EVO 130 cc Cylinder aluminum 6 ports 57mm stroke 51mm with head

    POLINI Racing EVO 130 cc Cylinder aluminum 6 ports 57mm stroke 51mm with head

    POLINI

    -11%

    Special Price €398.50 Regular Price €445.97
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  27. BIKE SPECIFIC
    POLINI racing aluminum cylinder 40mm with piston and head included POLINI racing aluminum cylinder 40mm with piston and head included

    POLINI racing aluminum cylinder 40mm with piston and head included

    POLINI

    -24%

    Special Price €152.30 Regular Price €199.92
    Add to Wish List
  28. BIKE SPECIFIC
    POLINI Competition Cylinder by SIP 50 cc POLINI Competition Cylinder by SIP 50 cc

    POLINI Competition Cylinder by SIP 50 cc

    POLINI

    -6%

    Special Price €194.50 Regular Price €207.10
    Add to Wish List
  29. BIKE SPECIFIC
    POLINI Racing Cylinder in cast iron 6 transfers 61mm 2 rings without head POLINI Racing Cylinder in cast iron 6 transfers 61mm 2 rings without head

    POLINI Racing Cylinder in cast iron 6 transfers 61mm 2 rings without head

    POLINI

    -14%

    Special Price €251.30 Regular Price €292.19
    Add to Wish List
  30. BIKE SPECIFIC
    POLINI P140.0189 THERMAL UNIT CYLINDER KIT POLINI P140.0189 THERMAL UNIT CYLINDER KIT

    POLINI P140.0189 THERMAL UNIT CYLINDER KIT

    POLINI

    €152.30
    Add to Wish List
  31. BIKE SPECIFIC
    POLINI P140.0059 Thermal unit cylinder kit POLINI P140.0059 Thermal unit cylinder kit

    POLINI P140.0059 Thermal unit cylinder kit

    POLINI

    €163.60
    Add to Wish List
  32. BIKE SPECIFIC
    POLINI P140.0091 Thermal unit cylinder kit POLINI P140.0091 Thermal unit cylinder kit

    POLINI P140.0091 Thermal unit cylinder kit

    POLINI

    €151.40
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  33. BIKE SPECIFIC
    POLINI P146.0800 Thermal unit cylinder kit POLINI P146.0800 Thermal unit cylinder kit

    POLINI P146.0800 Thermal unit cylinder kit

    POLINI

    €697.10
    Add to Wish List
  34. BIKE SPECIFIC
    POLINI racing thermal group D.57 stroke 51 130cc cast iron cylinder POLINI racing thermal group D.57 stroke 51 130cc cast iron cylinder

    POLINI racing thermal group D.57 stroke 51 130cc cast iron cylinder

    POLINI

    -20%

    Special Price €238.60 Regular Price €298.28
    Add to Wish List
  35. BIKE SPECIFIC
    POLINI Thermal Group D.63 stroke 60 187cc aluminum cylinder POLINI Thermal Group D.63 stroke 60 187cc aluminum cylinder

    POLINI Thermal Group D.63 stroke 60 187cc aluminum cylinder

    POLINI

    -20%

    Special Price €396.20 Regular Price €495.27
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  36. BIKE SPECIFIC
    POLINI Thermal Group stroke 41.8 78.7cc cast iron cylinder POLINI Thermal Group stroke 41.8 78.7cc cast iron cylinder

    POLINI Thermal Group stroke 41.8 78.7cc cast iron cylinder

    POLINI

    -20%

    Special Price €248.80 Regular Price €310.98
    Add to Wish List
  37. BIKE SPECIFIC
    POLINI 50 cc cylinder in ductile iron 40mm 2 rings head included POLINI 50 cc cylinder in ductile iron 40mm 2 rings head included

    POLINI 50 cc cylinder in ductile iron 40mm 2 rings head included

    POLINI

    -17%

    Special Price €144.10 Regular Price €173.26
    Add to Wish List
  38. BIKE SPECIFIC
    POLINI Racing Cylinder 68 cc in aluminum 5 ports head included 47.0 mm POLINI Racing Cylinder 68 cc in aluminum 5 ports head included 47.0 mm

    POLINI Racing Cylinder 68 cc in aluminum 5 ports head included 47.0 mm

    POLINI

    -13%

    Special Price €155.20 Regular Price €179.41
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  39. BIKE SPECIFIC
    POLINI Racing Kit 177 cc in cast iron 7 transfers stroke 57mm for PX80 POLINI Racing Kit 177 cc in cast iron 7 transfers stroke 57mm for PX80

    POLINI Racing Kit 177 cc in cast iron 7 transfers stroke 57mm for PX80

    POLINI

    €363.60
    Add to Wish List
  40. BIKE SPECIFIC
    POLINI P140.0054 THERMAL UNIT CYLINDER KIT POLINI P140.0054 THERMAL UNIT CYLINDER KIT

    POLINI P140.0054 THERMAL UNIT CYLINDER KIT

    POLINI

    €149.20
    Add to Wish List
  41. BIKE SPECIFIC
    POLINI P140.0080 THERMAL UNIT CYLINDER KIT POLINI P140.0080 THERMAL UNIT CYLINDER KIT

    POLINI P140.0080 THERMAL UNIT CYLINDER KIT

    POLINI

    -15%

    Special Price €266.60 Regular Price €315.00
    Add to Wish List
  42. BIKE SPECIFIC
    POLINI cylinder 85cc stroke cast iron 6 ports 50mm x 43mm with included cylinder head POLINI cylinder 85cc stroke cast iron 6 ports 50mm x 43mm with included cylinder head

    POLINI cylinder 85cc stroke cast iron 6 ports 50mm x 43mm with included cylinder head

    POLINI

    -11%

    Special Price €163.60 Regular Price €183.51
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  43. BIKE SPECIFIC
    POLINI cylinder ductile iron 5 transfers 38.4mm bore 43mm stroke with head POLINI cylinder ductile iron 5 transfers 38.4mm bore 43mm stroke with head

    POLINI cylinder ductile iron 5 transfers 38.4mm bore 43mm stroke with head

    POLINI

    -14%

    Special Price €151.40 Regular Price €176.34
    Add to Wish List
  44. BIKE SPECIFIC
    POLINI P140.0181 THERMAL UNIT CYLINDER KIT POLINI P140.0181 THERMAL UNIT CYLINDER KIT

    POLINI P140.0181 THERMAL UNIT CYLINDER KIT

    POLINI

    -15%

    Special Price €155.20 Regular Price €183.00
    Add to Wish List
  45. BIKE SPECIFIC
    POLINI Racing Cylinder 85 cc Nodular Cast Iron 6 Transfers 50 mm Stroke 43 mm with Head POLINI Racing Cylinder 85 cc Nodular Cast Iron 6 Transfers 50 mm Stroke 43 mm with Head

    POLINI Racing Cylinder 85 cc Nodular Cast Iron 6 Transfers 50 mm Stroke 43 mm with Head

    POLINI

    €248.90
    Add to Wish List
  46. BIKE SPECIFIC
    POLINI Racing Cylinder 177 cc ductile iron 2 transfers 63 mm stroke 57 mm with head POLINI Racing Cylinder 177 cc ductile iron 2 transfers 63 mm stroke 57 mm with head

    POLINI Racing Cylinder 177 cc ductile iron 2 transfers 63 mm stroke 57 mm with head

    POLINI

    €361.30
    Add to Wish List
  47. BIKE SPECIFIC
    POLINI Racing Cylinder 154 cc in aluminum 60 mm with head for BFA MOTORS POLINI Racing Cylinder 154 cc in aluminum 60 mm with head for BFA MOTORS

    POLINI Racing Cylinder 154 cc in aluminum 60 mm with head for BFA MOTORS

    POLINI

    -2%

    Special Price €697.10 Regular Price €712.52
    Add to Wish List
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Polini: performance, innovation and Italian tradition

Born as a small workshop in 1945 in Alzano Lombardo, Polini is today a family-run company that is now in its fourth generation. On BRIXIAMOTO.COM you can find kits, engines, special parts and upgrade components for scooters, 2T and 4T motorbikes, up to electric motors. Polini combines a long tradition with a continuous drive for innovation: every product is designed with modern technology, tested on the track and manufactured with quality rigour. A world leader in the field of special parts for scooters, the brand is present in over 64 countries and has strong ties with the world of racing, through the Polini Italian Cup and the continuous development of high-performance solutions that arise from racing experience.

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  1. air box 8items
  2. air filter support 2items
  3. air intake bell mouth 1item
  4. battery small parts 1item
  5. brake caliper bracket 1item
  6. brake caliper small parts 1item
  7. brake shoes 10items
  8. brake shoes small parts 2items
  9. carburetor 15 1item
  10. carburetor 17 5 5items
  11. carburetor 19 5items
  12. carburetor 21 4items
  13. carburetor 24 3items
  14. carburetor 26 1item
  15. carburetor 28 1item
  16. carburetor 34 2items
  17. carburetor float chamber 4items
  18. carburetor float needle 1item
  19. carburetor gasket 3items
  20. carburetor idle jet 4items
  21. carburetor main jet 2items
  22. carburetor membrane support 2items
  23. carburetor needle 3items
  24. carburetor spring 1item
  25. choke conversion kit 4items
  26. choke lever 1item
  27. clutch 11items
  28. clutch bell 12items
  29. clutch cover 3items
  30. clutch disc kit 13items
  31. clutch drum 1item
  32. clutch springs 16items
  33. Complete engine gasket kit 1item
  34. contrast spring 15items
  35. control unit small parts 1item
  36. cooling fan 1item
  37. crankshaft 19items
  38. crankshaft bearing kit 8items
  39. crankshaft small parts 1item
  40. cylinder 6items
  41. Cylinder base gasket 9items
  42. cylinder head 16items
  43. Cylinder head gasket 2items
  44. cylinder small parts 1item
  45. cylinder studs 4items
  46. db killer 1item
  47. digital motorcycle rpm meter 2items
  48. electronic ignition 6items
  49. electronic unit wiring 4items
  50. Engine oil seal kit 9items
  51. exhaust silencer 1item
  52. exhaust system small parts 1item
  53. Float bowl gasket 2items
  54. float carburetor kit 4items
  55. flywheel fan 3items
  56. fork repair kit 1item
  57. front fork small parts 3items
  58. front shock absorber 1item
  59. front sprocket small parts 1item
  60. gearing small parts 1item
  61. ignition cover 1item
  62. intake bellow 3items
  63. intake manifolds 57items
  64. motorcycle brake caliper 2items
  65. motorcycle brake disc 10items
  66. motorcycle brake pads 12items
  67. motorcycle camshaft 4items
  68. motorcycle carburetor 10items
  69. motorcycle catalyst 4items
  70. motorcycle clutch part 1item
  71. motorcycle control unit 5items
  72. motorcycle diagnosis tool 1item
  73. motorcycle exhaust 54items
  74. motorcycle exhaust silencer 9items
  75. motorcycle flywheel 2items
  76. motorcycle fork 1item
  77. motorcycle ignition coil 1item
  78. motorcycle lambda sensor 1item
  79. motorcycle racing oil filter 2items
  80. motorcycle reeds 8items
  81. motorcycle rim 1item
  82. motorcycle sport air filter 42items
  83. motorcycle stator 1item
  84. motorcycle transmission belt 37items
  85. muffler pipe tube 3items
  86. oil seal 3items
  87. other carburetor jets 6items
  88. piston 50items
  89. piston ring 13items
  90. primary gear 15items
  91. rear shock absorber 2items
  92. reed valve block 6items
  93. roller bearing 3items
  94. scooter clutch 8items
  95. secondary gear 12items
  96. shift cross 8items
  97. silentblock 2items
  98. spare part for carburetor 17items
  99. spark plug cap 1item
  100. steering bearings 2items
  101. swingarm small parts 1item
  102. thermal unit cylinder kit 79items
  103. tools motorbike 1item
  104. Top end cylinder gasket kit 13items
  105. torque drive 1item
  106. transmission gears 12items
  107. transmission pulley 5items
  108. valve spring 3items
  109. variator 18items
  110. variator kit 5items
  111. variator rollers 156items
  112. variator small parts 5items
  113. variomatic spare part 2items
  114. water temperature indicator 1item
  115. wheel axle 1item
  116. wheel hub 1item
  117. woodruff key 2items
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