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NEW Black Diamond Hyper-Finish Valve Guide Honing System Master Kit

BHF-KIT | Black Diamond Hyper-Finish Diamond Sizing Kit


The NEW Black Diamond Hyper-Finish Diamond Valve Guide sizing System is better than ever!

The original Hyper-Finish valve guide honing system was manufactured entirely by hand, which led to variations in quality, sizing and availability. The new system is being manufactured entirely by CNC machine, so human error has been eliminated ensuring consistent sizing and availability. 

The Complete Kit includes:

  • Drive Head (HF-100)
  • 7.00mm Mandrel Assembly (BHFM-271C)
  • .312" Mandrel Assembly (BHFM-307C)
  • .343" Mandrel Assembly (BHFM-344C)
  • .375" Mandrel Assembly (BHFM-350C)
  • 7.0mm x 1-1/4" Nylon Bristle Valve Guide Brush (GVP-11N)
  • 5/16" x 2-1/2" Nylon Bristle Valve Guide Brush (GVP-1N)
  • 11/32" x 2-1/2" Nylon Bristle Valve Guide Brush (GVP-2N)
  • 3/8" x 2-1/2" Nylon Bristle Valve Guide Brush (GVP-3N)
  • 8 ounce bottle Diamond Honing Oil (DHO-8)

To customize the contents of this kit, please call 1-800-533-8010.

    Watch the Black Diamond Valve Guide Honing System in action

    View or Download the Product Instructions

    More information


    To return an item:
    1. Write a brief note describing the reason for the return. Please be sure to include your name or company name or account number.

    2. Return the item freight prepaid within 60 days from the invoice date. For best results, please ship return merchandise by UPS or Federal Express. Please keep your receipt because it may be necessary to track the package if it is lost in transit.

    3. A 10% restocking fee applies on all returns unless the problem was the fault of Goodson. If so, the restocking charge is waived and shipping costs are reimbursed. Credits will be made to the account originally billed.

    Send the completed Product Return Form along with the product to:

    Goodson Shop Supplies
    156 Galewski Drive
    Winona, MN 55987

    Read our complete return policy.


    Goodson strives to ship orders the same day they are received. In fact, we track this on a daily basis and we are currently shipping 99.97% of orders on the same day.

    We use most major carriers including FedEx, UPS, USPS and regional carrier, SpeeDee.

    For more information, check out our Shipping & Delivery page.

    International Sales

    Goodson ships F.O.B. Winona, Minnesota, USA to most countries around the world. To find a distributor near you visit our Distributor Listing.

    If there is not a distributor in your area, you can contact Goodson by phone (1-507-452-1830) or order online. Please note some items (such as Sunnen) are not available for shipping outside of the United States & Canada. If you have these items in your shopping cart, your order cannot be processed. You must remove those items from the cart to continue.

    Proposition 65 Information

    "Proposition 65 requires businesses to provide warnings to Californians about significant exposures to chemicals that cause cancer, birth defects or other reproductive harm." -  

    So, what does this mean for Goodson customers? It means that many of common products used in manufacturing contain products known to the state of California to cause cancer and/or reproductive harm. Components such as stainless steel, galvanized wire, brass, bronze, etc. can be found in the Prop 65 list and require us to provide the warning. 

    You can find a complete list at the Proposition 65 website.

    Proposition 65 WarningWARNING: Cancer and Reproductive Harm -