Custom Chrome Catalogue

ENGINE

KB Forged Performance Pistons Computer designed to give a lightweight yet strong piston. Forged out of 4032 low expansion 11% silicon alloy. This design and material along with an Accumulator groove between top and second ring produces a better ring seal. They also feature top land mini grooves which help reduce detonation. Anti-Friction Coated Skirts on piston sets are noted. All kits include: 2 forged pistons, 2 sets of Ductile Iron Moly coated rings, pins, locks and assembly lube. All pistons listed on this page are “Sold as a Pair”

For Twin Cam 88 Models From 99-06

4.125“ Bore with 4.000“ Stroke/88“ to 107“ (.021“ Dome w/ -1.5cc) with Coated Skirts / 10.5:1 Compression 650980 Standard 650981 +.005" oversize 650982 +.010" oversize 650983 +.020" oversize 4.000 Bore with 4.375“ Stroke/96‘‘ to 110“ (.101“ Dish w/ +13.3cc) with Coated Skirts / 9.5:1 Compression 650871 Standard 650872 +.005" oversize 650873 +.010" oversize 650874 +.020" oversize 4.000 Bore with 4.375“ Stroke/96‘‘ to 110“ (.037“ Dish w/ +7.1cc) with Coated Skirts / 10.0:1 Compression 650984 Standard 650985 +.005" oversize 650986 +.010" oversize 650987 +.020" oversize 4.000 Bore with 4.375“ Stroke/96“ to 110“ (.033“ Dome w/ -.5cc) with Coated Skirts / 10.5:1 Compression Note: Will also fit Screamin Eagle 95cc Heads 9.6:1 Compression 650988 Standard 650989 +.005" oversize 650990 +.010" oversize 4.125 Bore with 4.375“ Stroke/96‘‘ to 117“ (.157“ Dish w/ +19.0cc) with Coated Skirts / 9.5:1 Compression 650875 Standard 650876 +.005" oversize 650877 +.010" oversize 650878 +.020" oversize 4.125 Bore with 4.375“ Stroke/96‘‘ to 117“ (.030“ Dish w/ +7.2cc) with Coated Skirts / 10.5:1 Compression 650879 Standard 650880 +.005" oversize 650881 +.010" oversize 650882 +.020" oversize

3.875“ Bore with 4.000 Stroke/ 88“ to 95“ (.008“ Dome w/ -1cc) with Coated Skirts / 9.25 Compression 650960 Standard 650961 +.005" oversize 650962 +.010" oversize 650963 +.020" oversize 3.875“ Bore with 4.000 Stroke/ 88“ to 95“ (.117“ Dome w/ -6.7cc) with Coated Skirts / 10.0:1 Compression 650964 Standard 650965 +.005" oversize 650966 +.010" oversize 650967 +.020" oversize 3.875“ Bore with 4.375“ Stroke/ 96“ to 103“ (Dish w/ + 6.9cc) with Coated Skirts / 9.5:1 Compression 650863 Standard 650864 +.005" oversize 650865 +.010" oversize 650866 +.020" oversize 3.875“ Bore with 4.375“ Stroke/ 96“ to 103“ (Flat Top w/ + 1.9cc) with Coated Skirts / 10.0:1 Compression 650968 Standard 650969 +.005" oversize 650970 +.010" oversize 650971 +.020" oversize 3.875“ Bore with 4.375“ Stroke/ 96“ to 103“ (.081“ Dome w/ -3.6cc) with Coated Skirts / 10.5:1 Compression 650972 Standard 650973 +.005" oversize 650974 +.010" oversize 650975 +.020" oversize 4.125“ Bore with 4.000“ Stroke/88“ to 107“ (.077“ Dish w/ +9.4cc) with Coated Skirts / 9.5:1 Compression 650867 Standard 650868 +.005" oversize 650869 +.010" oversize 650870 +.020" oversize 4.125“ Bore with 4.000“ Stroke/88“ to 107“ (.077“ Dish w/ +3.6cc) with Coated Skirts / 10.0:1 Compression 650976 Standard 650977 +.005" oversize 650978 +.010" oversize 650979 +.020" oversize

For Twin Cam 96 Models from 07-Up

For Twin Cam 96 Models from 07-Up

8

For Twin Cam 88 Models From 99-06

*Prices shown are suggested retail prices only. Actual retail prices are determined by each dealer and may vary. All parts are sold each unless otherwise noted. Retail prices may reflect an each quantity.

8.30

Please see Cautionary Information in back of catalog.