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Piston Kit - 3.538 in. Bore/8.5:1 Ratio - KB258.040

  • Part #:
    1316504
  • Mfg Part #:
    KB258.040
  • OEM/Ref#:
1 / 3

Piston Kit - 3.538 in. Bore/8.5:1 Ratio - KB258.040

  • Part #:
    1316504
  • Mfg Part #:
    KB258.040
  • OEM/Ref#:
MSRP: $199.95

Price: $179.96 10% off!
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KB Performance Piston Kit - 3.538 in. Bore/8.5:1 Ratio - KB258.040
  • Originally designed by Keith Black, these pistons provide a tighter fit and longer piston and ring life
  • Made from high-strength T6 heat-treated, 390 hypereutectic alloy, then diamond-machined and held to plus or minus one gram weight and less than one-half-thousandth-inch (.0005 in.) tolerances from piston to piston
  • Each kit contains two pistons, pins, spiro-lock pin clips and Hastings moly rings
  • Replacement spiro-lock pin clips Part no. 148980 (4pk)
  • Made in the U.S.A.

Available Sizes:
3.498/Standard - Part No. 131650S
3.503/+ .005 in. - Part No. H13210
3.508/+ .010 in. - Part No. H13213
3.518/+ .020 in. - Part No. H13228
3.528/+ .030 in. - Part No. 1316503
3.538/+ .040 in. - Part No. 1316504


Replacement Rings:
3.498/Standard - Part No. H1310R
3.503/+ .005 in. - Part No. H1318R
3.508/+ .010 in. - Part No. H1311R
3.518/+ .020 in. - Part No. H1312R
3.528/ + .030 in. - Part No. H1313R
3.538/+ .040 in. - Part No. 1316504


NOTE:
KB pistons can be installed tighter than other pistons. This results in less piston rock and better ring seal. Please read instructions furnished with piston for correct piston clearance.


NOTE:
Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.


Our pistons, rings and kits are sold by application and bore size. Please note that STANDARD and OVERSIZES are not indicated. To get the correct part, you must know the standard bore size to make sure you are ordering either the standard or correct amount of oversize that you need. If you have any questions, please call Technical Service.


Replacement rings also available separately Part no. H1314R (enough for two pistons)

Specifications
Bore Size 3.538 in.
Compression Ratio 8.5:1
Mfg #: KB258.040
Part #: 1316504
Type Piston Kit
Units Each
Weight 2.75 lbs
Alternate/OEM Part Number(s):
09102018
UPC Code:
800745060426
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Resources & Manuals
Fitment for KB Performance Piston Kit - 3.538 in. Bore/8.5:1 Ratio - KB258.040

Part 1316504 fits the following machines

Harley-Davidson

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