2026 KPMI Full Catalog V1 - Flipbook - Page 281
TRIUMPH 500 TWIN 1958-1973
®
triumph
Valve Spring Kit • Lightweight Racing
KPMI P/N
Type
Max Valve Lift Installed Height
Seat Pressure
Open Pressure
@ Lift
74#
206#
.455"
Intake
70-70030
.455”
1.205"
Exhaust
Kit Includes
4
Titanium Retainers
4
CrSi Valve Springs
4
H. T. Steel Basewashers
Valves • Black Diamond™ • Black Nitroneg Stems for 1967-1973
Stem Diameter
Tulip
O. L.
Remarks
1.540"
0.3105"
23º
3.480"
OEM#
70-6853 & E6853
33.66mm
1.325”
0.3100"
27º
3.425”
OEM#
70-6854 & E6854
Intake
Exhaust
KPMI P/N
Type
Head Diameter
70-4290
Intake
39.12mm
70-4291
Exhaust
Valve Guides • Manganese Bronze
A
B
C
D
E
0.560"
0.610"
0.620”
1.160"
0.550"
F
G
70-0339
0.3105" 0.5010" / Std.
No seal required.
+0.002”
70-0340
+0.004”
70-0341
+0.006”
70-0342
+0.015”
70-4031
Fork Bushing • Nickel Bronze
KPMI P/N
Type
O.D.
I.D
O.L
Quantity
70-0646
Top
1.4990”
1.3075”
1.000”
Pkg. of 1
70-0647
Bottom
1.4945”
1.2495”
0.875”
Pkg. of 1
Note: Fits 1963-1970 Triumph 500 Twin's.
Crankshaft Bushings • Bearing Bronze
KPMI P/N
Material
O. D.
I. D.
O. L.
Remarks
Quantity
70-0817
Bronze
1.814"
1.439"
1.035"
Standard
Pkg. of 1
70-0818
Bronze
1.814"
1.429"
1.035"
-0.010”
Pkg. of 1
70-0819
Bronze
1.814"
1.419"
1.035"
-0.020”
Pkg. of 1
70-0820
Bronze
1.814"
1.409"
1.035"
-0.030”
Pkg. of 1
For all the applications available for Kibblewhite's Triumph® line of products,
please refer online to the Triumph® section of the www.kpmi.us website,
under British Bike.
263
Machined from high quality mill certi昀椀ed SAE660 Bearing Bronze (custom sizes available).
Visit us at www.kpmi.us
