Kibblewhite New Products

Ducati™ 8mm Shim Kit
For all two valve Ducati™ engines

Manufactured from certified US milled aircraft quality steel, these openers and closers are designed to work with Ducati models using 8.0mm valve stems. KPMI holds exact dimensional tolerances including those for radii and perpendicularity, and sets specific hardness and surface finish numbers for these parts to insure optimum fit, performance, strength, and durability.

A convenient kit is available featuring the most commonly used Openers (3.0mm-5.0mm in 0.1mm increments) and Closers (6.20mm-7.60mm in 1.0mm increments).

The Openers are also available individually in sizes from 2.0mm to 6.30mm in 0.1mm increments, and the Closers are available individually in sizes from 5.50mm to 8.0mm in 0.1mm increments.

High Performance “Beehive” Valve Spring Kits for Evo and Twin Cam Harley-Davidsons®

By taking advantage of the latest development in valve spring wire chemistry and manufacturing techniques, KPMI has developed ovate wire “Beehive” style springs that will live and perform at a high level in Harley Davidson applications. By coupling these developments with strict KPMI design protocols and employing multiple design, simulation, and FEA analysis software, we were we able to overcome the torsional stresses unique to ovate wire springs that previously severely limited their operating parameters. This was critical, as there are nearly 100 camshaft part numbers available for these applications.

Springs are progressively wound using Kobe Super-Clean chrome silicon based wire that is heat treated and shot peened.  KPMI uses its tightly toleranced, FEA designed hardened steel Posi-Loc™ style retainer in these applications to insure correct assembly height and resist keeper “pull through”. 

Kits also include hardened steel basewashers to locate the spring and control lateral movement.

2011 Polaris RZR XP 900 High Performance Parts

KPMI offers a complete line of High Performance valvetrain components for the RZR XP 900.

• Black Diamond One Piece Forged Stainless Steel Valves are available in standard and +1.0mm head diameters. By using design protocols that include flow testing and FEA design analysis, we are able to produce valves that are extremely strong and light, with excellent flow characteristics.
• C630 High Performance Bronze Alloy Valve Guides contain 80% Copper and 5% Nickel.
  This blend of materials create a tough valve guide that resists corrosion and wear, and has excellent thermal characteristics.
• Polaris RZR 900 XP High Performance “Turbo” Racing Valve Spring Kit is available for naturally aspirated and turbocharged versions of the XP900. Our kit for naturally aspirated applications sets up at 48# seat pressure, 130# @ stock lift, and 149# at its max designed lift of .445”. The KPMI Turbo Kit sets up at 65# seat pressure, 175# @ stock lift, and 200# at its max designed lift of .445” Both kits use dual springs wound from Kobe Super-Clean chrome silicon based valve spring wire that has been heat treated and shot peened. Kits include FEA designed titanium retainers, and hardened steel bases.