Precision Machining Black Diamond one-piece valves are made from superb quality stainless steel and machined to a profile that provide excellent flow characteristics. These lightweight valves are then impregnated by a very special process .002" deep and a surface build up, to improve wear properties and reduce friction. This process provides resistance to corrosion and wear superior to that developed by hard chromium and electro-less nickel plating. Most valves are available in either stock size with stock or thin stem and with larger head diameter for the high performance engine builder.
1932-1973 45CI Solo & Servi-Car | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
756058
$65.24
|
in. & ex. | .3395" | 1.625" | 18070-32, 18080-32 |
237015
$11.28
|
Keepers, set of 4 pairs | .340" | - | 18228-30 |
2003-2010 Buell XB9 & XB12 | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
234299
$65.23
|
in. | .2760" | 1.805" | 18290-02 |
234300
$65.23
|
ex. | .2755" | 1.575" | 18291-02 |
234301
$65.23
|
in. | .2760" | 1.900" | Over size head |
234298
$8.11
|
Keepers, set of 4 pairs | .275" | - | 18260-02 |
Buell with Thunderstorm heads | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
232393
$65.23
|
ex. | .3096" | 1.615" | 18638-92YB |
232394
$65.23
|
in. | .310" | 1.940" | Over size head |
234298
$8.11
|
Keepers, set of 4 pairs | .310" | - | 18260-02 |
1970-1985 Ironhead Sportster | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
232388
$45.27
|
in. | .309" | 1.935" | 18070-70 |
232389
$45.27
|
ex. | .3384" | 1.570" | 18033-80 |
232390
$45.26
|
in. | .309" | 2.000" | Over size head |
232391
$45.26
|
ex. | .3384" | 1.630" | Over size head |
237015
$11.28
|
Keepers, set of 4 pairs | .340" | - | 18228-30 |
1986-2003 Evolution Sportster 883 | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
232402
$45.26
|
in. | .3100" | 1.585" | 18031-86 |
232404
$45.26
|
ex. | .3095" | 1.350" | 18030-86 |
234293
$21.29
|
Keepers, set of 4 pairs | .310" | - | 18229-83A |
Conversion valves for 1986-2003 883 to 1200 Sportsters | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
234200
$45.26
|
in. | .310" | 1.715" | - |
234201
$45.26
|
ex. | .3096" | 1.480" | - |
234293
$21.29
|
Keepers, set of 4 pairs | .310" | - | 18229-83A |
Conversion valves for 2004 to present 883 to 1200 Sportsters | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
752248
$65.23
|
in. | .2755" | 1.715" | |
752249
$65.23
|
ex. | .2755" | 1.480" | |
234298
$8.11
|
Keepers, set of 4 pairs | .275" | - | 18260-02 |
1986 Evolution Sportster 1100 | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
232393
$65.23
|
ex. | .3096" | 1.615" | 18024-86 |
232394
$65.23
|
in. | .310" | 1.940" | Over size head |
234293
$21.29
|
Keepers, set of 4 pairs | .310" | - | 18229-83A |
1988-2003 Evolution Sportster 1200 | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
239302
$37.40
|
in. | .310" | 1.710" | 18023-87 |
239303
$37.40
|
ex. | .3095" | 1.475" | 18024-87 |
234293
$21.29
|
Keepers, set of 4 pairs | .310" | - | 18229-83A |
2004 to present Evolution Sportster 1200 | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
234299
$65.23
|
in. | .2760" | 1.805" | 18690-02 |
234300
$65.23
|
ex. | .2755" | 1.575" | 18691-02 |
234301
$65.23
|
in. | .2760" | 1.900" | Over size head |
234298
$8.11
|
Keepers, set of 4 pairs | .275" | - | 18260-02 |
Big Twin 1930-1936 VL Flathead | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
756061
$45.26
|
in. & ex. | .3715" | 1.930" | 163-30 &165-30 |
756062
|
in. & ex. | .3715" | 2.050" | Over size head |
237015
$11.28
|
Keepers, set of 4 pairs | .375" | - | 18228-30 |
Big Twin 1937-1948 UL Flathead | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
756059
$65.23
|
in. & ex. | .3715" | 1.930" | 18072-37, 18082-37 |
756060
|
in. & ex. | .3715" | 2.050" | Over size head |
234292
$40.15
|
Keepers, set of 4 pairs | .375" | - | 18228-36 |
Big Twin 1936-1947 (Knucklehead) | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
239300
$37.40
|
in. | .3765" | 1.750" | 18071-36 |
239301
$37.40
|
ex. | .3745" | 1.750" | 18081-36 |
234292
$40.15
|
Keepers, set of 4 pairs | .375" | - | 18228-36 |
Big Twin 1948-1965 (Panhead) | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
232381
$37.40
|
in. | .3765" | 1.750" | 18071-48 |
232382
$35.01
|
ex. | .3760" | 1.750" | 18082-57 |
237015
$11.28
|
Keepers, set of 4 pairs | .375" | - | 18228-30 |
Big Twin 1965-1984 (Shovelhead) | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
232383
$37.39
|
in. | .3765" | 1.950" | 18074-66 |
232384
$37.40
|
in. | .3765" | 2.000" | Over size head |
232382
$35.01
|
ex. | .3760" | 1.750" | 18082-57 |
232380
$37.39
|
ex. | .3760" | 1.780" | Over size head |
232385
$37.39
|
ex. | .3760" | 1.812" | Over size head |
Evolution Big Twin 1984-1999 | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
232395
$35.94
|
in. | .310" | 1.840" | 18074-83A |
232396
$35.94
|
ex. | .3096" | 1.615" | 18082-83 |
232397
$45.26
|
in. | .310" | 1.940" | Over size head |
234890
$35.95
|
in. | .310" | 1.900" | High Flow 28° |
729559
$35.95
|
in. | .3106" | 1.900" | High Flow 25° |
729558
$35.95
|
in. | .3108" | 1.940" | High Flow 25° |
729557
$32.10
|
in. | .3106" | 1.990" | High Flow 25° |
729540
$35.94
|
in. | .3106" | 2.100" | High Flow 25° |
729556
$32.10
|
in. | .3106" | 2.150" | High Flow 24° |
729562
$32.10
|
ex. | .3106" | 1.585" | High Flow 25° |
729561
$35.94
|
ex. | .3106" | 1.610" | High Flow 25° |
234891
$32.10
|
ex. | .3096" | 1.615" | High Flow 29° |
729560
$33.66
|
ex. | .3106" | 1.650" | High Flow 25° |
729541
$32.10
|
ex. | .3106" | 1.700" | High Flow 25° |
234293
$21.29
|
Keepers, set of 4 pairs | .310" | - | 18229-83A |
Twin Cam 1999-2004 | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
239427
$35.94
|
in. | .3106" | 1.840" | 18074-83A |
239429
$35.94
|
ex. | .3101" | 1.565" | 18085-99 |
239428
$32.10
|
in. | .3106" | 1.900" | High Flow 25° |
729559
$35.95
|
in. | .3108" | 1.900" | High Flow 25° |
234890
$35.95
|
in. | .310" | 1.900" | High Flow 28° |
729558
$35.95
|
in. | .3108" | 1.940" | High Flow 25° |
729557
$32.10
|
in. | .3108" | 1.990" | High Flow 25° |
729540
$35.94
|
in. | .3108" | 2.100" | High Flow 24° |
729556
$32.10
|
in. | .3108" | 2.150" | High Flow 24° |
729562
$32.10
|
ex. | .3106" | 1.585" | High Flow 25° |
729561
$35.94
|
ex. | .3106" | 1.610" | High Flow 25° |
234891
$32.10
|
ex. | .3096" | 1.615" | High Flow 29° |
729560
$33.66
|
ex. | .3106" | 1.650" | High Flow 25° |
729541
$32.10
|
ex. | .3106" | 1.700" | High Flow 25° |
234293
$21.29
|
Keepers, set of 4 pairs | .310" | - | 18229-83A |
Twin Cam 2005-2017 | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
750432
$45.30
|
in. | .2754" | 1.805" | 18074-05 |
750433
$45.27
|
in. | .2754" | 1.900" | Over size head |
729537
$45.27
|
in. | .2757" | 1.900" | Over size head |
729536
|
in. | .2757" | 1.980" | Over size head |
750434
$45.27
|
ex. | .2755" | 1.575" | 18085-05 |
729539
$45.27
|
ex. | .2755" | 1.575" | High Flow 25° |
729538
$45.28
|
ex. | .2755" | 1.610" | Over size head |
750435
$37.40
|
ex. | .2755" | 1.630" | Over size head |
234298
$8.11
|
Keepers, set of 4 pairs | .275" | - | 18260-02 |
Milwaukee Eight 2017 to present | ||||
ZPN | Type | Stem dia. | Head dia. | OEM |
729503
$37.40
|
in. | .2347" | 1.571" | 18000016 |
756079
$37.40
|
in. | .2347" | 1.614" | Over size head, EV8 |
729504
$37.40
|
in. | .2347" | 1.630" | Over size head, EV8 |
756080
$37.40
|
in. | .2347" | 1.654" | Over size head, EV8 |
729505
$37.40
|
ex. | .2347" | 1.264" | 18000034 |
756077
$37.40
|
ex. | .2342" | 1.284" | Over size head, EV8 |
756081
$42.18
|
ex. | .2342" | 1.299" | Over size head, Inconel |
756078
$42.18
|
ex. | .2342" | 1.284" | Over size head, Inconel |
756082
$45.28
|
ex. | .2342" | 1.339" | Over size head, Inconel |
729523
$80.32
|
Keepers, set of 8 pairs | .2347" | - | 18100060 |
Recommended Retail Prices excluding sales tax.
Prices exclude shipping, import duties and installation.
Prices are based on EUR to USD interbank rates obtained daily. The interbank rate is the rate that banks trade currency to each other. These prices must be used as a guide.