Premium Manganese Bronze Valve Guides for Harley Davidson Motorcycles
Made in Michigan

Must be finished reamed

High Performance Evolution, Twin Cam & Sportster -
Shorter for High Lift Cam and High Air Flow applications

CB56 & CB57 Series

Overall length 2.10 inches- .531 top
Id -0.308
Bottom of guide to shoulder CB56 series (Intake-Tapered) 1.480 inches
Bottom of guide to shoulder CB57series (Exhaust- Bull nosed)1.434 inches

.5625 od, intake# CB56-5625, exhaust# CB57-5625
.5630 od, intake# CB56-5630, exhaust# CB57-5630
.5635 od, intake# CB56-5635, exhaust# CB57-5635
.5640 od, intake# CB56-5640, exhaust# CB57-5640
.5645 od, intake# CB56-5645, exhaust# CB57-5645
.5650 od, intake# CB56-5650, exhaust# CB57-5650

Uses .531 Valve stem seal Part#, VS-802V

High Performance Evolution, Twin Cam & Sportster -
Shorter for High Lift Cam and High Air Flow applications

CB56s & CB57s Series

Overall Legnth 2.10 inches- .421 top
Id - 0.308
Bottom of guide to shoulder CB56s Series - (Intake-Tapered) 1.434 inches
Bottom of guide to shoulder CB57s Series - (Exhaust- Bull nosed) 1.434 inches

.5625 od, intake# CB56s-5625, exhaust# CB57s-5625
.5630 od, intake# CB56s-5630, exhaust# CB57s-5630
.5635 od, intake# CB56s-5635, exhaust# CB57s-5635
.5640 od, intake# CB56s-5640, exhaust# CB57s-5640
.5645 od, intake# CB56s-5645, exhaust# CB57s-5645
.5650 od, intake# CB56s-5650, exhaust# CB57s-5650

Uses .421 Valve Stem Seal Part#, VS-HA2V

Evolution & Twin Cam - Intake & Exhaust (Bull nosed)

CB55 Series

Overall Legnth 2.34 inches- .531 top
Id- 0.308
Bottom of guide to shoulder - 1.520 inches

.5625 od, Part# CB55-5625
.5630 od, Part# CB55-5630
.5635 od, Part# CB55-5635
.5640 od, Part# CB55-5640
.5645 od, Part# CB55-5645
.5650 od, Part# CB55-5650
.5655 od, Part# CB55-5655
.5660 od, Part# CB55-5660
.5665 od, Part# CB55-5665

Uses .531 Valve stem seal Part#, VS-802V

Evolution & Twin Cam - Intake & Exhaust (OEM Style)

CB05s Series

.5625 od, Part# CB05s-5625
.5630 od, Part# CB05s-5630
.5635 od, Part# CB05s-5635
.5640 od, Part# CB05s-5640
.5645 od, Part# CB05s-5645
.5650 od, Part# CB05s-5650
.5655 od, Part# CB05s-5655
.5660 od, Part# CB05s-5660
.5665 od, Part# CB05s-5665

Uses .421 Valve Stem Seal Part#, VS-HA2V

2005 & Up High Performance 7mm Valve- Twin Cam, Sportster & Buell

CB66 & CB67 Series

Overall Legnth- 2.04 inches
Seal top - 0.562
Id - 0.273
Bottom of guide to shoulder CB66 Series ( Intake-Taper) - 1.308
Bottom of guide to shoulder CB67 Series ( Bull nose) - 1.308

.5625 od, intake# CB66-5625, exhaust# CB67-5625
.5630 od, intake# CB66-5630, exhaust# CB67-5630
.5635 od, intake# CB66-5635, exhaust# CB67-5635
.5640 od, intake# CB66-5640, exhaust# CB67-5640
.5645 od, intake# CB66-5645, exhaust# CB67-5645
.5650 od, intake# CB66-5650, exhaust# CB67-5650

Uses .562 Valve Stem Seal Part# VS-7562V

Shovel & Pan Head 1200cc (1948-1979)
Intake & Exhaust

CB53 Series

Overall Legnth - 1.900 inches
Seal top - 0.562
Bottom of guide to Shoulder - 1.445
Standard OD - .566
Id- 0.375

.5660 od, Part# CB53-566
.5670 od, Part# CB53-567
.5680 od, Part# CB53-568
.5690 od, Part# CB53-569
.5700 od, Part# CB53-570
.5720 od, Part# CB53-572
.5740 od, Part# CB53-574
.5760 od, Part# CB53-576
.5910 od, Part# CB53-591

Uses .562 Valve Stem Seal Part# VS-377V

Shovel Head 1340cc (1979-1984)
Intake & Exhaust

CB54 Series

Overall Legnth - 1.900 inches
Seal top - 0.625
Bottom of guide to Shoulder - 1.445
Standard OD - 0.625
ID - .375

.6250 od, Part# CB54-625
.6260 od, Part# CB54-626
.6270 od, Part# CB54-627
.6280 od, Part# CB54-628
.6290 od, Part# CB54-629
.6310 od, Part# CB54-631
.6500 od, Part# CB54-650

Uses . 625 Valve Stem Seal Part# VS-403v

CYCO
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Southwest Distribution:
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