Black Diamond™ Std. Intake & Exhaust Valves for Triumph Pre-Unit 650 1956-1962

•  F.E.A. Designed 1Pc. Lightweight Stainless Steel Forgings
•  Increased Resistance to Corrosion
•  Excellent Flow Characteristics
•  Black Nitride Coated

•  100% Quality Controlled

To learn more about other Kibblewhite® Triumph® parts, go to our Triumph® Pre-Unit 650  1956-1962 Section​

Yamaha® MR-1™ Watercraft Engines 2003-2014 Lightweight Racing Spring Kit and Components

Since 1938, KPMI® has taken great pride in our ability to design innovative performance improvements for valvetrains. This innovative ability has never been more apparent than with the development of the high tech lightweight racing valve spring kits for the incredibly stressed and torturous environment in today’s high revving 4-stroke engines. The challenge to engineer a valvetrain that would outperform OEM systems, that in some cases included titanium components, was not an easy one. This task would require the concentrated efforts of every member of KPMI®’s design team. It was apparent early on that an OEM style spring with a bit more pressure was not going to be the complete answer for these engines. Working together as a team enabled KPMI® to evolve with a “unified system” approach. In fact, these innovative high performance lightweight valve spring kits, would not only outperform factory parts, but outlive them as well. Each KPMI® spring kit is designed for its specific application, taking into account several critical parameters including; cam profiles, harmonics, natural frequency of the springs, valvetrain mass, required pressure, wire stress, fatigue life, and engine rpm, just to name a few! Today KPMI® proudly offers complete high performance lightweight valve spring kits for a host of applications.

We choose to use the copper based C63000 nickel-aluminum bronze as a material to make our bronze valve guides because of its ideal characteristics for the application. The 5% nickel content provides superior resistance to wear, and the approximately 80 percent copper content delivers outstanding heat conductivity. KPMI® guide profiles are designed to have minimal effect on the airstream while maintaining critical cross sectional thickness in high temperature areas, which promotes high performance and endurance.

​​All KPMI® Black Diamond™ Stainless steel valves are impregnated by a special German process to a depth of .002, with a surface build up of .0002. This Black Diamond process improves wear properties, reduces friction, and provides resistance to corrosion and wear that is superior to chrome and nickel electrolysis plating. Each valve is designed using Finite Element Analysis software, and profiles are tested on our computerized flow bench. Black Diamond Valves are lightweight, strong, one piece forgings with profiles that provide excellent flow characteristics.

To learn more about other Kibblewhite® Yamaha® parts and accessories, go to our Yamaha® MR-1 Watercraft Engines 2002-2013 Section​


Spin True® Universal Lead Free Spoke Wheel Weights  
California Compliant “Lead Free” Wheel Weights

•  CNC Machined, Chrome Plated Stainless Steel
•  .25oz, .5oz, .75oz, 1oz, 1.25oz and 1.5oz
•  Symmetrical Halves Lock Onto the Nipple
•   Fits .250” to .350” Nipple Diameters


To learn more about other Spin True® Spoke Wheel Weights, go to our Spin True® Spoke Wheel Weight Section​

White Diamond® Inconel® Std. Ex Valve for Suzuki® GSX-R 1000 2005-2008

One-Piece-Forged “Super Alloy” Inconel® 751

•  Retains all mechanical properties at elevated temperatures
     o Something only super alloys can do
•  Maintains corrosion resistance at elevated temperatures
     o Something only super alloys can do
•  High Nickel content for superior strength and toughness
     o A must for Forced Induction or Nitrous

Manufactured by KPMI® under the registered trade mark of White Diamond®

•  White Diamond®
     o One-Piece-Forged with a Hard Chrome Stem

Flow Characteristics

•  Out-flows all other valves on the market with a 14° Tulip, .194" Radius, and a .080” wide face

To learn more about other Kibblewhite® BRP® parts and accessories, go to our Suzuki® GSX-R 1000 2005-2008 Section​

Tappet Block, Cast Iron for Triumph® 500/ 650/ 750 1946-1983

•  Modification of this tappet block is necessary for fitment in 1946-’68 models
•  Bores should be sized with a piloted reamer and finished with a ball hone to achieve proper running clearance and

   surface finish after the tappet block is installed
•  These cast iron tappet blocks are machined from a proprietary cast iron material with the same design features as our    

    bronze version 
•   Precision ground OD and reamed bores allow for easy installation and exceed OEM tolerances

•   A more affordable alternative to the high performance bronze tappet blocks


To learn more about other Kibblewhite® Triumph® parts, go to our Triumph® Pre-Unit 500/ 650  1956-1962 Section​

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High Performance Valve Guide Seals

•  KPMI® Recommended O.E.M. Replacement Valve Guide Seals
• Exceeds O.E.M. Specifications
•  Your High Performance O.E.M. Alternative
•  Compatible with O.E.M. and KPMI® Spring Kits and Valve Guides

To learn more about this Kibblewhite® High Performance Valve Guide Seals for the various models, go to

Can-AM® 400 2006-2013 Components Section

Can-AM® Commander / Outlander / Renegade 500cc -1000cc 2006-2014 Components Section

Can-AM® Maverick 2013-2015 Components Section

Ducati® 750 GT 1971-1974 Components Section

Ducati® 750 FL Special / Paso 1986-1988 / 906 Paso 1988-1990 Components Section

Ducati® 851 SBK 1987-1792 / 888 SBK 1991-1993 / 916 SBK 1994-1998  Components Section

Ducati® 800 / 900 2000-2007 Components Section

Ducati® 696/ 796 / 1000 / 1100 2003-2010  Components Section

DLC Coated Tappets

Our coated tappets undergo a low temperature PVD process to deposit a DLC film, which is extremely hard and has a very low coefficient of friction. These properties help the tappet to maintain its durability in extreme duty situations. Although KPMI® never recommends running a camshaft off the edge of the tappet, this coating may help increase durability in these applications.

To learn more about this Kibblewhite® DLC Coated Tappets for the various models, go to

Suzuki® GSX-1300R Hayabusa 1999-2015 Components Section

Polaris® RZR XP 900 2011-2012 Components Section

Polaris® Ranger 900 2013-2014 Components Section

Polaris® RZR 900 2013-2014 Components Section

Polaris® RZR XP 1000 2014 Components Section

OE Style Seal Installation Tools

These installation tools for OE style seals are manufactured from high strength 6061-T6 Aluminum for increased durability when compared to plastic installers. The tools are designed for precision fitment onto the seal OD to help the builder center the seal over the valve guide so that a few light strikes from a hammer will set the seal. Radiused top striking surface reduces the likelihood of a burr forming from deformation.
Each installation tool is color coded and laser marked for each seal size by guide diameter.


To learn more about this Kibblewhite® OE Style Seal Installation Tools for the various Harley- Davidson® models, go to

Harley-Davidson® Panhead 1948-1965 Components Section

Harley-Davidson® Shovelhead 74" 1948-1977 Components Section

Harley-Davidson® Shovelhead 80" 1978-1983 Components Section

Harley-Davidson® Sportster 1957-1983 Components Section

Harley-Davidson® Evolution 1984-1999 Components Section

Harley-Davidson® XL 1100cc 1986-1987 Components Section

Harley-Davidson® Evo Sportster 1200cc 1988-2003 Components Section

Harley-Davidson® Evo Sportster 883cc 1988-2003 Components Section 

Harley-Davidson® Twin Cam 88" 1999-2004 Components Section