Top 10 Koyo products – best-selling models in 2025!

Ranking updated: 1 December 2025'

Discover Koyo’s best-selling products. Top 10 hits loved by motorcyclists – see which models are number one in 2025!

• 1. Koyo Simson S51 SR50 engine bearing set

  
  Description Parameters

  • General description

    the set has all the bearings that are in the engine
    goods produced by the Japanese, renowned company Koyo

  • The set includes

    6204 C3 bearing: 2 pcs.
    6203 C3 bearing: 1 pc.
    bearing 6000 C3: 1 pc.
    bearing 16004 C3: 1 pc.
    bearing 6004 C3: 1 pc.

  €32.90

  Product ID: 99633

  Koyo Simson S51 SR50 engine bearing set Check

  • Manufacturer

    Koyo
• 2. Bearings + simmerings Koyo kpl

  
  Description Parameters Ratings

  • General description

    bearings made by Japanese company Koyo
    seals made of crystallite
    silicone resistant to high temperatures
    double lip simulators

  • The set includes

    6204 bearing: 2 pieces.
    16004 bearing: 1 pc.
    bearing 6000: 1 pc.
    bearing 6203: 1 pc.
    bearing 6004: 1 pc.
    seal 20x47x7: 1 pc.
    seal 20x30x7: 1 pc.
    seal 20x35x7: 1 pc.
    seal 22x35x7: 1 pc.
    set of engine gaskets
    oil filler plug black
    oil filler plug red
    oil filler plug o-ring: 2 pcs.
    silicone

  €49.65

  Product ID: 99637

  Bearings + simmerings Koyo kpl

     (3)

  Check

  • Manufacturer

    Koyo

  5

  

  3 reviews

  5

  4

  3

  2

  1

  With photo

  Sort Latest Rating: From highest Rating: From lowest

  • 2017-06-17, 12:01

    View original

    

    Andrzej

    Well made, quality as best as possible, put on without any problems, the set is great, you do not need to buy each part separately , the price is also the most on the plus side

    • Esthetics:
    • Material quality:
    • Fitting:
    

    Reliable opinion

  • 2017-04-16, 08:39

    View original

    

    Mateusz

    Simson S51. The quality of the product is very good. Parts fit perfectly worth the price. I can 100% recommend

    • Esthetics:
    • Material quality:
    • Fitting:
    

    Reliable opinion

  • 2017-06-19, 21:36

    View original

    

    Marek

    Hello I own a simson s51 I purchased for it bearings (koyo) seals everything great . I highly recommend.

    • Esthetics:
    • Material quality:
    • Fitting:
    

    Reliable opinion