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1983 Honda CB450SC Nighthawk Service Equipment & Holder Hardware

Make a task-based equipment list for your 1983 CB450SC Nighthawk. A two-gauge synchronizer supports intake-vacuum comparison, while the helmet-holder lock addresses a separate hardware replacement. Check adapter access for the measuring kit and the actual mounting arrangement for the holder before choosing either.

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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...
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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
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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,...
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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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1983 Honda CB450SC Nighthawk · Tools, Hardware & Other Buying guide

Check access for the gauges and mounting for the holder

The measuring kit supplies 180mm and 65mm extensions with 5mm threads, plus gauge damping equipment. The helmet lock instead relies on reference 50710-086-007 and a matching bracket, fastener position and latch arrangement.

Parts to consider

Universal Motorcycle Carburetor Synchronizer Vacuum Gauge ~ 2 Carb Synchronizer Two-gauge service kitUniversal/custom kit for two carburetors, including bracket, hoses, dampening valves, instructions and 180mm/65mm extensions with 5mm threads.View part Honda CB Helmet Holder Lock w Keys ~ Replaces 50710-086-007 Helmet-holder hardware with keysLock replacing 50710-086-007 on the listed CB450SC application. Supplied keys accompany the lock; compare its mounting and latch engagement.View part

Assess extension reach before placing the equipment order

Read the extension dimensions alongside the connection thread required by the fitted carburetors. The kit offers 180mm and 65mm lengths, both with 5mm threads. Its universal/custom application and statement that Honda connections are typically 5mm still leave the actual adapter match and available access to be checked.

Include the holder arrangement in the lock decision

Reference 50710-086-007 helps identify the intended helmet lock, but also compare the bracket, fastening location and latch engagement. The new lock includes keys without a stated match to the ignition key. Keep any key-sharing requirement separate from the physical mounting and secure-release checks.

Service Equipment & Holder Hardware questions

Will the included extensions reach the vacuum connections I need to use?

Compare the available access with the supplied 180mm and 65mm extension lengths, and verify the required thread against their 5mm threads. Those dimensions help plan the setup; the universal/custom application does not confirm reach on every fitted carburetor arrangement.

What equipment comes with the kit for reducing jumping gauge readings?

Dampening valves are included to steady vacuum pulses, together with two gauges, their mounting bracket, hoses, extensions and instructions. Use that supplied setup guidance when arranging the comparison; it does not replace service specifications for the fitted carburetors.

What should I compare when adding a replacement helmet lock to the order?

Use Honda reference 50710-086-007 together with the holder’s bracket, fastener location and latch engagement. Keys accompany the replacement, but an ignition-key match is not stated. Confirm that requirement separately if you want the locks to share a key.

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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