This Item no longer available

Below you will find information about an item(s) that BBR no longer manufactures or sells. This information is provided for current owners of these items and for historical purposes. We do not have any more of this item(s) (new, used, scratch-n-dent, or otherwise). We do NOT maintain lists of customers that have these items for sale or that wish to purchase them. All items that BBR currently sells are listed on our Product pages.

Unfortunately, we cannot produce "one-offs" of any of these discontinued items. They were discontinued when we determined that they were no longer profitable to manufacture. Generally, making a single item costs about 10 times the old retail price - or we lose money on it - so we rarely do it. The past 20 years of building playbike performance products has taught us that we need to sell a quantity of about 100, a year, of any particular item for it to break even. So, if you can find 100 people to pay us up front, we'll consider making just about anything. It's that simple.

If you're looking for an item that isn't listed here or on our current Product pages, we also have a more historical section of our website. Check out our detailed BBR Product ID page for lots of photos and general information about BBR products of the past.
Bore Kit - 106cc Super Pro Stroker Kit / XR/CRF 50/70
Bore Kit - 106cc Super Pro Stroker Kit / XR/CRF 50/70 
411-HXR-5305
411-HXR-5305
411-HXR-5212
411-HXR-5212
411-HXR-5220
411-HXR-5220
411-HXR-5250
411-HXR-5250
411-HXR-5255
411-HXR-5255
411-HXR-5262
411-HXR-5262
411-HXR-5265
411-HXR-5265
411-HXR-5310
411-HXR-5310
411-HXR-5350
411-HXR-5350
512-BBR-1001
512-BBR-1001
512-BBR-2001
512-BBR-2001


For those who want arm-jerking power, this kit is for you. This complete 106cc package includes a 50mm stroker crankshaft and 52mm BBR cast aluminum cylinder. The cylinder retains mounts for the skid plate installation. The ultimate combination of horsepower and performance. No case boring required.

Fits Honda XR/CRF50 and XR/CRF70 engines.
 
  
   • BBR big valve/big port cylinder head
• BBR billet cam cover
• 52mm 11:1 piston, rings, pin & clips
• 26mm Mikuni carb kit with throttle and cable
• Assortment of main and pilot jets
• performance manifold and air filter
• BBR aluminum cylinder
• BBR HD clutch springs
• Exclusive MX grind camshaft
• High-volume oil pump
• Complete top end gasket set
• Detailed instructions
 
   
 
BBR General Jetting Guidelines Chart
 
 Installation Instructions:  106cc_StrokerCrankKit_new08.pdf 

Part NumberApplicationPrice 
411-HXR-5305Bore Kit - 106cc Super Pro Stroker Kit / XR/CRF50/70 $799.95
Discontinued
411-HXR-5260Intake Valve Kit - 88cc Super Pro Bore Kit, 25mm / XR/CRF50$39.95
Discontinued
411-HXR-5261Exhaust Valve Kit - 88cc Super Pro Bore Kit, 22mm / XR/CRF50$59.95
Discontinued
Replacement Parts:
411-HXR-5212Ring Set - 88cc/106cc S/P-FTP Kit / XR/CRF50/70$32.00
Discontinued
411-HXR-5220Crankcase Gaskets - XR/CRF50$16.95
Discontinued
411-HXR-5250Cylinder - BBR Aluminum, 52mm / XR/CRF50$155.00
Discontinued
411-HXR-5251Cylinder Head Assembly - BBR Big Valve/Port / XR/CRF50$300.00
Discontinued
411-HXR-5252Camshaft - BBR Super Pro 88/106cc Bore Kit / XR/CRF50$129.95
Discontinued
411-HXR-5255Oil Pump - BBR High Flow W/Gasket / XR/CRF50$49.95
Discontinued
411-HXR-5262Rocker Arm/Shaft Kit - 88cc Super Pro Bore Kit / XR/CRF50$32.95
Discontinued
411-HXR-5265Valve Set - Intake (25mm) / Exhaust (22mm) SuperPro Bore Kit / XR/CRF50$65.00
Discontinued
411-HXR-5310Gasket Kit - 106cc Super Pro Stroke Up Kit / XR/CRF50$29.95
Discontinued
411-HXR-5311Piston Kit - 106cc Super Pro Stroke Up Kit / XR/CRF50$105.00
Discontinued
411-HXR-535050mm Stroker Crankshaft (88 to 106)$249.00
Discontinued
512-BBR-1001Throttle Cable - BBR 18mm/26mm Carb Kit / XR/CRF50 / KLX/DRZ110 / Bar Kit - CRF110F / DRZ70$24.00
Discontinued
512-BBR-2001Throttle Assembly - BBR Carb Kits / Brake Kits$22.95
Discontinued
Optional Parts:
385-HXR-5015Sprocket - Front, 15T / XR/CRF50, 00-Present$16.95
Discontinued
430-HXR-5003Air Filter - UNI, 1 3/4"(44mm) X 4", Straight / 26mm Carb / XR/CRF50/70$18.95
Discontinued
451-HXR-5001Rev Box - Honda / XR/CRF50/70/80/100$69.95
Discontinued
512-BBR-3002Aluminum Throttle Tube - BBR Carb Kit / Brake Kit Throttle$42.95
Discontinued