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1982 Honda CB450SC Nighthawk Synchronizer & Helmet Lock Choices

Two different purchases are represented for your 1982 CB450SC Nighthawk: equipment for comparing carburetor vacuum and a replacement helmet-holder lock. Choose the item that suits the task, then check the fitted vacuum connections or lock mounting details before relying on the motorcycle application alone.

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Honda motorcycle parts

Choose your model and year to see parts listed for your bike.

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Logo patch 4 x 1 in. motorcycle garage patch

VintageCB750 Logo Patch ~ 4 x 1 in.

$7.87 USD
08-0318
Show off your VintageCB750 pride with this VintageCB750 Logo Sew-On Patch, featuring metallic red thread. Looks great sewn onto a riding jacket, hat, or...
Honda CB1100 CB1000 CB900 helmet holder lock w keys 50710-086-007

Honda CB Helmet Holder Lock w Keys ~ Replaces 50710-086-007

$27.95 USD
73-0141
Replace your helmet holder lock with this Helmet Holder Lock with Keys, replacing OEM #50710-086-007.Key Features• Helmet holder lock with keys• Replaces OEM #50710-086-007•...
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750 four engine t-shirt (xl size)

750 Four Engine T-Shirt (XL Size)

$29.95 USD
3/XL
Pay homage to Honda's groundbreaking inline-four with the 750 Four Engine T-Shirt in Extra Large. A black 100% cotton tee featuring a beautifully rendered...
New
Universal motorcycle beanie hat toque

Universal Motorcycle Beanie Hat/Toque

$15.95 USD
19-0117
Represent classic Honda style with this Honda Beanie Hat / Toque. Black knit with the classic Honda logo on both sides. One size fits...
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750 four engine t-shirt (large size)

750 Four Engine T-Shirt (Large Size)

$29.95 USD
3/L
Celebrate the iconic SOHC inline-four with the 750 Four Engine T-Shirt in Large. Printed on a quality 100% cotton black tee, the front graphic...
New
Red Honda logo hat vintage motorcycle hat

Red Honda Logo Hat

$22.95 USD
61-1132
Add a Red Honda Logo Hat to your gear collection. Velcro adjustable back.Key Features• Red Honda Logo Hat• Velcro adjustable backPart Number: 61-1132
New
Blue Honda racing hat vintage motorcycle hat

Blue Honda Racing Hat

$22.95 USD
61-1133
Add a Blue Honda Racing Hat to your gear collection. Velcro adjustable back.Key Features• Blue Honda Racing Hat• Velcro adjustable backPart Number: 61-1133
750 four engine t-shirt (medium size)

750 Four Engine T-Shirt (Medium Size)

$29.95 USD
3/M
Pay tribute to the heart of the CB750 with the 750 Four Engine T-Shirt in Medium. A black 100% cotton tee featuring a beautifully...
Universal motorcycle carburetor synchronizer vacuum gauge 2 carb synchronizer

Universal Motorcycle Carburetor Synchronizer Vacuum Gauge ~ 2 Carb Synchronizer

$54.95 USD
37-0003
Carburetor and throttle body synchronizer kit for bikes with 2 Carbs. Makes synching your carburetor setup fast and easy! For use with Honda, Kawasaki,...
View details
New
Universal motorcycle face mask

Universal Motorcycle Face Mask

$17.50 USD
13-0005
Keep road debris out of your eyes with this Face Mask with removable goggles. Features air holes in the mouth area and on the...
Established 2010 t-shirt (xl size)

Established 2010 T-Shirt (XL Size)

$26.95 USD
2/-XL
Proudly display your place in the CB750 community with the Established 2010 T-Shirt in X-Large. A black 100% cotton tee featuring the "Established 2010...
New
Honda hrc logo trucker hat

Honda HRC Logo Trucker Hat

$27.95 USD
61-1144
Top off your kit with this Honda Logo with HRC Emblem Trucker Hat. High-quality hat with beautifully stitched Honda logo. Snap-on adjustable back.Key Features•...
New
White Honda logo hat vintage motorcycle hat

White Honda Logo Hat

$22.95 USD
61-1142
Add a White Honda Logo Hat to your gear collection. Velcro adjustable back.Key Features• White Honda Logo Hat• Velcro adjustable backPart Number: 61-1142
Established 2010 t-shirt (large size)

Established 2010 T-Shirt (Large Size)

$26.95 USD
2/-L
Celebrate the CB750 community in this Established 2010 T-Shirt (Large). A black 100% cotton tee featuring the "Established 2010 VintageCB750 Logo" on the front,...
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750 four engine t-shirt (xxl size)

750 Four Engine T-Shirt (XXL Size)

$29.95 USD
3/2XL
Wear your respect for Honda's legendary four-cylinder on your chest with the 750 Four Engine T-Shirt in XX-Large. A 100% cotton black tee featuring...
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Established 2010 t-shirt (xxl size)

Established 2010 T-Shirt (XXL Size)

$26.95 USD
2/-2XL
Represent the CB750 scene in this Established 2010 T-Shirt (XX-Large). A roomy, soft 100% cotton tee in black with the "Established 2010 VintageCB750 Logo"...
New
Universal motorcycle bottle opener vintage garage accessory

Universal Motorcycle Bottle Opener ~ Vintage Garage Accessory

$14.95 USD
19-0118
Find a great gift for any motorcycle fan with this Motorcycle Bottle Opener. Sturdy construction with an aged brass look. 5" x 1.5".Key Features•...
New
Honda 93 red hat vintage motorcycle hat

Honda 93 Red Hat

$29.95 USD
61-1145
Top off your kit with this Honda 93 Red Hat. High-quality hat with beautifully stitched logos.Key Features• Honda 93 Red Hat• Beautifully stitched logosPart...
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T-shirt (small size)

Classic T-Shirt (Small Size)

$20.59 USD
00-0001/S
Wear your passion for classic Hondas with the VintageCB750 Classic T-Shirt in Small. This 100% cotton tee comes in black with the VintageCB750 logo...
Established 2010 t-shirt (medium size)

Established 2010 T-Shirt (Medium Size)

$26.95 USD
2/-M
Honor the CB750 community in everyday comfort with the Established 2010 T-Shirt in Medium. A black 100% cotton tee carrying the "Established 2010 VintageCB750...
Established 2010 t-shirt (small size)

Established 2010 T-Shirt (Small Size)

$26.95 USD
2/-S
Commemorate a decade-plus of CB750 community with the Established 2010 T-Shirt in Small. This black 100% cotton tee carries the "Established 2010 VintageCB750 Logo"...
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Honda Gold Label T-Shirt - Black

Honda Gold Label T-Shirt - Black

$29.95 $27.95 USD
You save $2.00
33/M
A black Honda tee with the Gold Label wing graphic printed on the front. Factory Effex uses a lightweight cotton and polyester blend for...
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1982 Honda CB450SC Nighthawk · Tools, Hardware & Other Buying guide

Choose equipment and lock hardware by the fitted setup

The synchronizer is a universal/custom kit for two carburetors, with 5mm-thread extensions. The helmet lock has a specific Honda replacement reference. Their useful ordering checks come from those connections and mounting details, rather than from a broad model description.

Parts to consider

Universal Motorcycle Carburetor Synchronizer Vacuum Gauge ~ 2 Carb Synchronizer Two-gauge vacuum synchronizerUniversal/custom kit with hoses, gauge bracket, dampening valves, instructions and 5mm-thread extensions. Confirm compatibility with the fitted vacuum connections.View part Honda CB Helmet Holder Lock w Keys ~ Replaces 50710-086-007 Helmet-holder lock with keysReplacement reference 50710-086-007, with keys supplied. Compare the mounting bracket and latch arrangement before choosing it.View part

Check the measuring connections before choosing a kit

The synchronizer description says Honda connections are typically 5mm; that is not a measurement of every fitted carburetor or replacement rack. Verify the actual vacuum connection and required adapter before purchase. The included extension lengths can help assess access without establishing a model-specific reach guarantee.

Treat lock fit and key matching as separate decisions

The helmet lock is supplied with keys, but no keyed-alike relationship to the existing ignition key is stated. Confirm its bracket, fastener location and latch engagement first. After fitting, secure closure and correct release must be checked before hanging a helmet from the holder.

Synchronizer & Helmet Lock Choices questions

What connection equipment is supplied with the two-gauge synchronizer?

The kit includes hoses, a mounting bracket, dampening valves, instructions and 180mm and 65mm extensions with 5mm threads. Compare those threads and lengths with the fitted vacuum connections; Honda’s typically 5mm connections are not a universal fit guarantee.

Why are dampening valves included with the vacuum gauges?

They steady vacuum pulses so the gauge needles can be read more accurately when comparing two carburetors. Use the supplied instructions for the kit; no numerical vacuum target or model-specific adjustment setting is given in the product description.

Will the helmet-holder lock use my existing ignition key?

The replacement is supplied with keys, but the listing does not state that it is keyed alike to your existing ignition lock. Plan for the supplied keys unless matching is confirmed, and check the holder’s mounting and latch separately.

Not sure which part you need?

Send your model and year, plus photos of your existing part and any changes to the original setup.

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