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BBR 88CC FLAT TOP PISTON BORE KIT 2001-03 XR50R 2004-2023 CRF50F 411-HXR-5400

SKU: 80-9960

BARCODE:

VENDOR: BBR Motorsports

$369.95

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PRODUCT INFORMATION
PRODUCT INFORMATION



BBR 88cc Flat Top Piston Bore Kit

Convert your CRF/XR50 to an 88cc screamer with this complete kit. Everything is included to upgrade the performance of you mini-bike. This kit uses your stock CRF/XR50 cylinder head.

Also fits 1988-1999 Z50R with short piston.


  • Aluminum BBR cylinder
  • Special 52mm piston specially designed to work with your stock cylinder head's combustion chamber
  • BBR special grind camshaft take full advantage of the large piston for great performance
  • Special BBR tapered aluminum intake manifold adapts the large carb to the stock intake port size
  • 18mm carb includes extra main and pilot jets for easy tuning
  • Also includes CR style throttle, cable, air filter and top end gasket kit

Installation Note 1: Throttle unit included with kit will only work with 7/8" handlebars and will not mount to stock XR/CRF50 handlebars. Stock handlebars are 3/4".

Installation Note 2: This kit will not work with the Honda XR/CRF70 or other big port cylinder heads. It is designed for the tiny combustion chamber of the OEM Honda XR/CRF50 cylinder head. The flat top piston dome will result in an extremely low compression ratio when combine with the XR/CRF70 type cylinder head. The result is a motor that makes less horsepower than stock

Product Info: 

  • Our stock photos shown are of the actual item.
  • Brand new directly from Honda in original packaging.
  • IN STOCK AND READY TO SHIP
  • SAME DAY SHIPPING MONDAY - FRIDAY IF ORDERED BEFORE 10AM!!!


Fits the following Vehicles:

2022 -2023- CRF50F
2021 - CRF50F
2020 - CRF50F
2019 - CRF50F
2018 - CRF50F
2017 - CRF50F
2016 - CRF50F
2015 - CRF50F
2014 - CRF50F
2013 - CRF50F
2012 - CRF50F
2011 - CRF50F
2010 - CRF50F
2009 - CRF50F
2008 - CRF50F
2007 - CRF50F
2006 - CRF50F
2005 - CRF50F
2004 - CRF50F
2003 - XR50R
2002 - XR50R
2001 - XR50R
2000 - XR50R

Handling Time:

  • Handling time on all items is 1 business day. Business days are Monday - Friday excluding holidays.
  • Orders are processed daily at 10am EST Monday - Friday, this means if you place your order after 10am EST your order will not be processed until the following business day.

Domestic Shipping:

  • Free shipping on most items unless otherwise stated to the lower 48 states. Additional charges for Alaska, Hawaii, Puerto Rico and Guam may apply. We reserve the right to change shipping carrier based on location or for combined orders. This is to ensure your package gets to you as quickly and as well packaged as possible. Our inventory is constantly updating and changing, we do our best to keep it as accurate as possible. However, in some instances seasonal items sell very fast and can be subject to temporary delays. In the case this happens, we place your parts on an emergency restocking order and the item will generally ship within 1 business day. In the event of a prolonged delay we will make our best effort to contact and notify you of such delays. ETA's provided by eBay are ESTIMATED TIMES, we aim to get you your order within these time frames however some unforeseen circumstances do arise. We will do our best to work with you to get you your item as fast as possible.

International Shipping:

  • We ship worldwide. Limitations due to manufacturer's restrictions on some items may apply. The shipping costs do not include duty or import taxes so please check before you purchase an item. All international items will ship via USPS Priority Mail International or USPS Express Mail International for addition fee. Shipping times will vary depending on the country the item is being shipped to.

Combined Shipping:

  • We do our best to combine shipping on orders. If you wish to ensure that multiple items you have purchased are combined please send us a message.
  • We offer 60 day free returns!
  • Returns must be in NEW/UNUSED condition in ORIGINAL PACKAGING.
  • If the part is used there is a possibility that you will not receive a full refund, as we do have to resell the item.
  • Electrical parts are NOT returnable.
  • All Returns must be authorized by us and you will get a RMA number to put on the outside of the box.
  • If an exchange needs to be made we will gladly work with you, however you must pay for shipping to return item AND shipping to get the new item to you.
  • In the event that we make a mistake, they do happen occasionally (we are sorry), we will cover shipping costs to get you the correct item.
BBR 88CC FLAT TOP PISTON BORE KIT 2001-03 XR50R 2004-2023 CRF50F 411-HXR-5400

BBR 88CC FLAT TOP PISTON BORE KIT 2001-03 XR50R 2004-2023 CRF50F 411-HXR-5400

$369.95