Page 31 - Classic
P. 31
Pinion Shaft Gears. Orange is
the largest, yellow is the small- Cam Shaft Gear
est on 1936-77. For 1977-89
orange is largest, black is small- 10-0629 10-0578
12-1379 12-1399 est. *denotes OEM type
1936-53 1954-77 Size/ 1977-89 Size/
OHV BT OHV BT Color OHV
24010-39 24010-54 OEM Big Twin Color
12-1399* — Standard —
— 12-1379* Standard —
— 12-1268 Orange 12-9938 Orange
— — Black 12-9943 White 10-0626
— — Red 12-9945 Yellow
— — Blue 12-9940 Red
— — Green 12-9941 Blue
12-1265 12-1273 White 12-9942 Green
— — Brown 12-9939 Black 10-0627
— 12-1275 Yellow — CLASSIC
12-1995
12-1393 12-1479
10-0660
V-Twin Motor Shop Cam Chest Kit includes internal Big Twin
12-1491 12-1492 12-1396 replacement type parts for years listed including a Sifton TM cam.
Circuit Breaker Drive and Idler Gear fit 1936-69 Big Twins. Order cam bearings and bushing kit separately.
Model
Fits
VT No.
Order shims separately to fit. Available as lightning with holes 10-0629 1936-47 OHV Knucklehead
or solid. *Note for high lift cams. 10-0578 1936-47 OHV Lightning
VT No. OEM Type Style
12-1388 25775-36 Idler S&S 10-0626 1948-57 Panhead
12-1397 25775-36 Idler Solid 10-0676 1958-64 Panhead-Shovelhead
12-1393 25775-36 Idler Lightning 10-0627 1965-69 Panhead-Shovelhead
12-1491 Sifton Idler Lightning 10-0660 1970-84 Big Twin Shovelhead
12-1492 Sifton Idler Solid
12-1396 25850-36A Drive Solid
12-1995* 25850-36B Drive Solid 10-0803 10-0804
12-1479 25850-36 Drive Lightning Idler and Circuit Breaker Drive Gear Shafts Kits.
12-1389* 25850-36 Drive S&S Sifton VT No. Item
Shims Thickness 10-1292 10-0803 Idler Shaft Kit
10-4221 .050”
10-4223 .058” contains an idler shaft and a bushing, fits
10-4224 .062” 1941-69 Big Twin Over Head Valve
10-4225 .066” 10-1293 10-0804 Circuit Breaker Shaft Kit contains one shaft
12-1497 12-1498 12-0825 and two bushings, fits 1941-69 Big Twin
Over Head Valve
10-1294 10-1295 10-1296 10-0878
Reverse Rotation Circuit Breaker Drive Gear and Timer Idler and Circuit Breaker Kit.
Gear. Counterclockwise rotation gears allow use of dual fire late VT No. Year Type
type ignition to be installed in timer housing. 10-1294 1936-58 Circuit Breaker
VT No. Item 10-1295 1959-69 Circuit Breaker
12-1497 Circuit Breaker Gear 10-1296 1941-69 Idler
12-1498 Timer Gear with pin 10-0878 1936-69 Idler Gear Stud Kit
12-0825 Gear Kit 499
the largest, yellow is the small- Cam Shaft Gear
est on 1936-77. For 1977-89
orange is largest, black is small- 10-0629 10-0578
12-1379 12-1399 est. *denotes OEM type
1936-53 1954-77 Size/ 1977-89 Size/
OHV BT OHV BT Color OHV
24010-39 24010-54 OEM Big Twin Color
12-1399* — Standard —
— 12-1379* Standard —
— 12-1268 Orange 12-9938 Orange
— — Black 12-9943 White 10-0626
— — Red 12-9945 Yellow
— — Blue 12-9940 Red
— — Green 12-9941 Blue
12-1265 12-1273 White 12-9942 Green
— — Brown 12-9939 Black 10-0627
— 12-1275 Yellow — CLASSIC
12-1995
12-1393 12-1479
10-0660
V-Twin Motor Shop Cam Chest Kit includes internal Big Twin
12-1491 12-1492 12-1396 replacement type parts for years listed including a Sifton TM cam.
Circuit Breaker Drive and Idler Gear fit 1936-69 Big Twins. Order cam bearings and bushing kit separately.
Model
Fits
VT No.
Order shims separately to fit. Available as lightning with holes 10-0629 1936-47 OHV Knucklehead
or solid. *Note for high lift cams. 10-0578 1936-47 OHV Lightning
VT No. OEM Type Style
12-1388 25775-36 Idler S&S 10-0626 1948-57 Panhead
12-1397 25775-36 Idler Solid 10-0676 1958-64 Panhead-Shovelhead
12-1393 25775-36 Idler Lightning 10-0627 1965-69 Panhead-Shovelhead
12-1491 Sifton Idler Lightning 10-0660 1970-84 Big Twin Shovelhead
12-1492 Sifton Idler Solid
12-1396 25850-36A Drive Solid
12-1995* 25850-36B Drive Solid 10-0803 10-0804
12-1479 25850-36 Drive Lightning Idler and Circuit Breaker Drive Gear Shafts Kits.
12-1389* 25850-36 Drive S&S Sifton VT No. Item
Shims Thickness 10-1292 10-0803 Idler Shaft Kit
10-4221 .050”
10-4223 .058” contains an idler shaft and a bushing, fits
10-4224 .062” 1941-69 Big Twin Over Head Valve
10-4225 .066” 10-1293 10-0804 Circuit Breaker Shaft Kit contains one shaft
12-1497 12-1498 12-0825 and two bushings, fits 1941-69 Big Twin
Over Head Valve
10-1294 10-1295 10-1296 10-0878
Reverse Rotation Circuit Breaker Drive Gear and Timer Idler and Circuit Breaker Kit.
Gear. Counterclockwise rotation gears allow use of dual fire late VT No. Year Type
type ignition to be installed in timer housing. 10-1294 1936-58 Circuit Breaker
VT No. Item 10-1295 1959-69 Circuit Breaker
12-1497 Circuit Breaker Gear 10-1296 1941-69 Idler
12-1498 Timer Gear with pin 10-0878 1936-69 Idler Gear Stud Kit
12-0825 Gear Kit 499
