SMALL END 15x19x17.20 BEARING, PROX 21.1211, 91103-KZ4-B01
4.1 Trustpilot 99.9% positive on eBay
UK delivery £4.99, free over £60 2–4 business days
Spread the cost with 18+, T&Cs apply
SMALL END BEARING 15x19x17.20 with 14pcs rollers. Made in Japan. PISTON PIN BEARINGS are manufactured by leading Japanese OEM factories. Designed and developed to OEM specifications, these bearings are a direct and cost efficient OEM replacement. Full line of piston pin bearings available from stock. Manufacturer part number is ProX 21.1211.
- SKU
- 56-8142.PROX
- Brand
- Pro-X Racing
- Availability
- In Stock (2)
Fitments (264)
| Make | Model | Year |
|---|---|---|
| GAS-GAS | EC 125 | 2009 |
| GAS-GAS | EC 125 | 2010 |
| GAS-GAS | EC 125 | 2011 |
| GAS-GAS | MX 125 | 2000 |
| GAS-GAS | MX 125 | 2001 |
| GAS-GAS | MX 125 | 2002 |
| GAS-GAS | MX 125 | 2003 |
| GAS-GAS | MX 125 | 2004 |
| GAS-GAS | MX 125 | 2005 |
| GAS-GAS | MX 125 | 2006 |
| GAS-GAS | MX 125 | 2007 |
| GAS-GAS | MX 125 | 2008 |
| GAS-GAS | MX 125 | 2009 |
| GAS-GAS | MX 125 | 2010 |
| GAS-GAS | MX 125 | 2011 |
| GASGAS | EC 125 | 2000 |
| GASGAS | EC 125 | 2001 |
| GASGAS | EC 125 | 2002 |
| GASGAS | EC 125 | 2003 |
| GASGAS | EC 125 | 2004 |
| GASGAS | EC 125 | 2005 |
| GASGAS | EC 125 | 2006 |
| GASGAS | EC 125 | 2007 |
| GASGAS | EC 125 | 2008 |
| HONDA | CR 125 | 1988 |
| HONDA | CR 125 | 1989 |
| HONDA | CR 125 | 1990 |
| HONDA | CR 125 | 1991 |
| HONDA | CR 125 | 1992 |
| HONDA | CR 125 | 1993 |
| HONDA | CR 125 | 1994 |
| HONDA | CR 125 | 1995 |
| HONDA | CR 125 | 1996 |
| HONDA | CR 125 | 1997 |
| HONDA | CR 125 | 1998 |
| HONDA | CR 125 | 1999 |
| HONDA | CR 125 | 2000 |
| HONDA | CR 125 | 2001 |
| HONDA | CR 125 | 2002 |
| HONDA | CR 125 | 2003 |
| HONDA | CR 125 | 2004 |
| HONDA | CR 125 | 2005 |
| HONDA | CR 125 | 2006 |
| HONDA | CR 125 | 2007 |
| HONDA | CR 125R | 1989 |
| HONDA | CR 125R | 1990 |
| HONDA | CR 125R | 1991 |
| HONDA | CR 125R | 1992 |
| HONDA | CR 125R | 1993 |
| HONDA | CR 125R | 1994 |
| HONDA | CR 125R | 1995 |
| HONDA | CR 125R | 1996 |
| HONDA | CR 125R | 1997 |
| HONDA | CR 125R | 1998 |
| HONDA | CR 125R | 1999 |
| HONDA | CR 125R | 2000 |
| HONDA | CR 125R | 2001 |
| HONDA | CR 125R | 2002 |
| HONDA | CR 125R | 2003 |
| HONDA | CR 125R | 2004 |
| HONDA | CR 125R | 2005 |
| HONDA | CR 125R | 2006 |
| HONDA | CR 125R | 2007 |
| HUSQVARNA | CR 125 | 1997 |
| HUSQVARNA | CR 125 | 1998 |
| HUSQVARNA | CR 125 | 1999 |
| HUSQVARNA | CR 125 | 2000 |
| HUSQVARNA | CR 125 | 2001 |
| HUSQVARNA | CR 125 | 2002 |
| HUSQVARNA | CR 125 | 2003 |
| HUSQVARNA | CR 125 | 2004 |
| HUSQVARNA | CR 125 | 2005 |
| HUSQVARNA | CR 125 | 2006 |
| HUSQVARNA | CR 125 | 2007 |
| HUSQVARNA | CR 125 | 2008 |
| HUSQVARNA | CR 125 | 2009 |
| HUSQVARNA | CR 125 | 2010 |
| HUSQVARNA | CR 125 | 2011 |
| HUSQVARNA | CR 125 | 2012 |
| HUSQVARNA | CR 125 | 2013 |
| HUSQVARNA | CR 150 | 2011 |
| HUSQVARNA | CR 150 | 2012 |
| HUSQVARNA | CR 150 | 2013 |
| HUSQVARNA | SM 125 | 1997 |
| HUSQVARNA | SM 125 | 1998 |
| HUSQVARNA | SM 125 | 1999 |
| HUSQVARNA | SM 125 | 2000 |
| HUSQVARNA | SM 125 | 2001 |
| HUSQVARNA | SM 125 | 2002 |
| HUSQVARNA | SM 125 | 2003 |
| HUSQVARNA | SM 125 | 2004 |
| HUSQVARNA | SM 125 | 2005 |
| HUSQVARNA | SM 125 | 2006 |
| HUSQVARNA | SM 125 | 2007 |
| HUSQVARNA | SM 125 | 2008 |
| HUSQVARNA | SM 125 | 2009 |
| HUSQVARNA | SM 125 | 2010 |
| HUSQVARNA | SM 125 | 2011 |
| HUSQVARNA | SM 125 | 2012 |
| HUSQVARNA | SM 125 | 2013 |
| HUSQVARNA | SMS 125 | 1997 |
| HUSQVARNA | SMS 125 | 1998 |
| HUSQVARNA | SMS 125 | 1999 |
| HUSQVARNA | SMS 125 | 2000 |
| HUSQVARNA | SMS 125 | 2001 |
| HUSQVARNA | SMS 125 | 2002 |
| HUSQVARNA | SMS 125 | 2003 |
| HUSQVARNA | SMS 125 | 2004 |
| HUSQVARNA | SMS 125 | 2005 |
| HUSQVARNA | SMS 125 | 2006 |
| HUSQVARNA | SMS 125 | 2007 |
| HUSQVARNA | SMS 125 | 2008 |
| HUSQVARNA | SMS 125 | 2009 |
| HUSQVARNA | SMS 125 | 2010 |
| HUSQVARNA | SMS 125 | 2011 |
| HUSQVARNA | SMS 125 | 2012 |
| HUSQVARNA | SMS 125 | 2013 |
| HUSQVARNA | WR 125 | 1997 |
| HUSQVARNA | WR 125 | 1998 |
| HUSQVARNA | WR 125 | 1999 |
| HUSQVARNA | WR 125 | 2000 |
| HUSQVARNA | WR 125 | 2001 |
| HUSQVARNA | WR 125 | 2002 |
| HUSQVARNA | WR 125 | 2003 |
| HUSQVARNA | WR 125 | 2004 |
| HUSQVARNA | WR 125 | 2005 |
| HUSQVARNA | WR 125 | 2006 |
| HUSQVARNA | WR 125 | 2007 |
| HUSQVARNA | WR 125 | 2008 |
| HUSQVARNA | WR 125 | 2009 |
| HUSQVARNA | WR 125 | 2010 |
| HUSQVARNA | WR 125 | 2011 |
| HUSQVARNA | WR 125 | 2012 |
| HUSQVARNA | WR 125 | 2013 |
| KAWASAKI | AR 125 | 1950 |
| KAWASAKI | AR 125 | 1951 |
| KAWASAKI | AR 125 | 1952 |
| KAWASAKI | AR 125 | 1953 |
| KAWASAKI | AR 125 | 1954 |
| KAWASAKI | AR 125 | 1955 |
| KAWASAKI | AR 125 | 1956 |
| KAWASAKI | AR 125 | 1957 |
| KAWASAKI | AR 125 | 1958 |
| KAWASAKI | AR 125 | 1959 |
| KAWASAKI | AR 125 | 1960 |
| KAWASAKI | AR 125 | 1961 |
| KAWASAKI | AR 125 | 1962 |
| KAWASAKI | AR 125 | 1963 |
| KAWASAKI | AR 125 | 1964 |
| KAWASAKI | AR 125 | 1965 |
| KAWASAKI | AR 125 | 1966 |
| KAWASAKI | AR 125 | 1967 |
| KAWASAKI | AR 125 | 1968 |
| KAWASAKI | AR 125 | 1969 |
| KAWASAKI | AR 125 | 1970 |
| KAWASAKI | AR 125 | 1971 |
| KAWASAKI | AR 125 | 1972 |
| KAWASAKI | AR 125 | 1973 |
| KAWASAKI | AR 125 | 1974 |
| KAWASAKI | AR 125 | 1975 |
| KAWASAKI | AR 125 | 1976 |
| KAWASAKI | AR 125 | 1977 |
| KAWASAKI | AR 125 | 1978 |
| KAWASAKI | AR 125 | 1979 |
| KAWASAKI | AR 125 | 1980 |
| KAWASAKI | AR 125 | 1981 |
| KAWASAKI | AR 125 | 1982 |
| KAWASAKI | AR 125 | 1983 |
| KAWASAKI | AR 125 | 1984 |
| KAWASAKI | AR 125 | 1985 |
| KAWASAKI | AR 125 | 1986 |
| KAWASAKI | AR 125 | 1987 |
| KAWASAKI | AR 125 | 1988 |
| KAWASAKI | AR 125 | 1989 |
| KAWASAKI | AR 125 | 1990 |
| KAWASAKI | AR 125 | 1991 |
| KAWASAKI | AR 125 | 1992 |
| KAWASAKI | AR 125 | 1993 |
| KAWASAKI | AR 125 | 1994 |
| KAWASAKI | AR 125 | 1995 |
| KAWASAKI | AR 125 | 1996 |
| KAWASAKI | AR 125 | 1997 |
| KAWASAKI | AR 125 | 1998 |
| KAWASAKI | AR 125 | 1999 |
| KAWASAKI | AR 125 | 2000 |
| KAWASAKI | AR 125 | 2001 |
| KAWASAKI | AR 125 | 2002 |
| KAWASAKI | AR 125 | 2003 |
| KAWASAKI | AR 125 | 2004 |
| KAWASAKI | AR 125 | 2005 |
| KAWASAKI | AR 125 | 2006 |
| KAWASAKI | AR 125 | 2007 |
| KAWASAKI | AR 125 | 2008 |
| KAWASAKI | AR 125 | 2009 |
| KAWASAKI | AR 125 | 2010 |
| KAWASAKI | AR 125 | 2011 |
| KAWASAKI | AR 125 | 2012 |
| KAWASAKI | AR 125 | 2013 |
| KAWASAKI | AR 125 | 2014 |
| KAWASAKI | AR 125 | 2015 |
| KAWASAKI | AR 125 | 2016 |
| KAWASAKI | AR 125 | 2017 |
| KAWASAKI | AR 125 | 2018 |
| KAWASAKI | AR 125 | 2019 |
| SHERCO | SC R 125 | 2019 |
| SHERCO | SE R 125 | 2018 |
| SHERCO | SE R 125 | 2019 |
| SHERCO | SE R 125 | 2020 |
| SHERCO | SE R 125 | 2021 |
| SHERCO | SE-R 125 | 2018 |
| SHERCO | SE-R 125 | 2019 |
| SHERCO | SE-R 125 | 2020 |
| SHERCO | SE-R 125 | 2021 |
| SHERCO | SE-R 125 | 2022 |
| SHERCO | SE-R 125 | 2023 |
| SHERCO | SE-R 125 | 2024 |
| SHERCO | SE-R 125 | 2025 |
| TM | EN 125 | 1992 |
| TM | EN 125 | 1993 |
| TM | EN 125 | 1994 |
| TM | EN 125 | 1995 |
| TM | EN 125 | 1996 |
| TM | EN 125 | 1997 |
| TM | EN 125 | 1998 |
| TM | EN 125 | 1999 |
| TM | EN 125 | 2000 |
| TM | EN 125 | 2001 |
| TM | EN 125 | 2002 |
| TM | EN 125 | 2003 |
| TM | EN 125 | 2004 |
| TM | EN 125 | 2005 |
| TM | EN 125 | 2006 |
| TM | EN 125 | 2007 |
| TM | EN 125 | 2008 |
| TM | EN 125 | 2009 |
| TM | EN 125 | 2010 |
| TM | EN 125 | 2011 |
| TM | EN 125 | 2012 |
| TM | EN 125 | 2013 |
| TM | EN 144 | 2008 |
| TM | EN 144 | 2009 |
| TM | EN 144 | 2010 |
| TM | EN 144 | 2011 |
| TM | EN 144 | 2012 |
| TM | EN 144 | 2013 |
| TM | EN 144 | 2014 |
| YAMAHA | YZ 125 | 2002 |
| YAMAHA | YZ 125 | 2003 |
| YAMAHA | YZ 125 | 2004 |
| YAMAHA | YZ 125 | 2005 |
| YAMAHA | YZ 125 | 2006 |
| YAMAHA | YZ 125 | 2007 |
| YAMAHA | YZ 125 | 2008 |
| YAMAHA | YZ 125 | 2009 |
| YAMAHA | YZ 125 | 2010 |
| YAMAHA | YZ 125 | 2011 |
| YAMAHA | YZ 125 | 2012 |
| YAMAHA | YZ 125 | 2013 |
| YAMAHA | YZ 125 | 2014 |
| YAMAHA | YZ 125 | 2015 |
| YAMAHA | YZ 125 | 2016 |
| YAMAHA | YZ 125 | 2017 |
| YAMAHA | YZ 125 | 2018 |
| YAMAHA | YZ 125 | 2019 |
- General Product Group
- Crankshafts & Parts
- General Product Type
- Small End Bearing
- General Size
- 15x19x17.20
- Variant Id
- 251905
FULL DESCRIPTION
ProX Piston Pin Small End Bearing
This ProX Piston Pin Small End Bearing is designed to meet or exceed OEM specifications, providing a cost-effective replacement for your vehicle's original part. Manufactured by leading Japanese OEM factories, this bearing ensures reliable performance and durability.
Key Features:
- Dimensions: 15mm x 19mm x 17.20mm
- Features 14 rollers for smooth operation
- Made in Japan
- Direct OEM replacement
- Suitable for Dirtbike, ATV, PWC, and 50cc/scooter applications
- Part Number: ProX 21.1211
QUESTIONS? JUST ASK
Talk to John or Phil. Real people, Monday to Friday, 10:00 to 17:00.
Check the fitment table on this page against your make, model and year. Not sure? Call or email us and we will check it for you before you order.
UK delivery is £4.99, or free on orders over £60. Orders ship within 3 working days, then delivery takes 2–4 business days. Delivery details
Yes. You have 14 days from delivery to return it, unused and in its original packaging. Contact us first and we will send you the return instructions. Returns policy
By card, PayPal, Apple Pay or Google Pay, or spread the cost with Klarna. Payment is taken securely by Stripe, and the options for your order are shown at checkout.
More answers in our FAQ.
Trade pricing available
Buying parts for your business? Apply for a 2BrosParts trade account.


