SKU: 62031634008
msd boost box

msd boost box MSD 6520 Digital 6-Plus Ignition Control

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Description

msd boost box MSD 6520 Digital 6-Plus Ignition ControlThe MSD Digital 6 Plus Ignition Control Box (Part #6520) delivers high performance ignition power, precision control, and unmatched reliability for street or strip applications. Designed for racers and enthusiasts who demand accuracy and consistency, the Digital 6 Plus packs 135 millijoules of spark energy and 535 primary volts, ensuring a strong, consistent spark at every RPM. Its digital microprocessor constantly monitors voltage, timing, and RPM to

The MSD Digital-6 Plus Ignition Control Box (Part #6520) delivers high-performance ignition power, precision control, and unmatched reliability for street or strip applications. Designed for racers and enthusiasts who demand accuracy and consistency, the Digital-6 Plus packs 135 millijoules of spark energy and 535 primary volts, ensuring a strong, consistent spark at every RPM. Its digital microprocessor constantly monitors voltage, timing, and RPM to provide unmatched ignition stability and output control.

Built to handle the demands of high-output and nitrous-assisted engines, the Digital-6 Plus features a single-stage retard for nitrous, a start retard to ease engine cranking, and a 2-step rev limiter for launch control and overrev protection. Compatible with 4-, 6-, or 8-cylinder engines using points, amplifier, or magnetic pickup triggers, this universal system ensures race-ready performance with plug-and-play versatility. Engineered by MSD for precision and durability, the Digital-6 Plus is the go-to ignition control for high-performance builds.

Features:

  • Dual rev limiters adjustable in 100 RPM increments via rotary switch
  • Delivers 135 mJ of spark energy with 535 primary volts output
  • Single-stage retard for nitrous and top-end tuning control
  • Start retard feature eases pressure on starter and flywheel
  • RISC microprocessor for digital accuracy and fast response time
  • Adjustable magnetic pickup compensation ensures trigger precision
  • LED indicator displays trigger or charging system problems instantly
  • Compatible with 4, 6, or 8-cylinder engines – universal application

Specifications:

  • Brand: MSD Ignition
  • Part Number: 6520
  • Primary Voltage: 535 Volts
  • Secondary Voltage: 45,000 Volts
  • Spark Energy: 135 Millijoules
  • Current Draw: 0.7 Amp per 1,000 RPM
  • Operating Voltage: 12–18V DC (Negative Ground)
  • RPM Range: Up to 12,500 RPM at 14.4 Volts
  • Weight: 3.7 lbs

Included:

  • (1) MSD Digital-6 Plus Ignition Control Box – Red Aluminum Housing
  • (1) Wiring Harness Kit – Plug-and-Play Leads
  • (1) Mounting Hardware Set – Stainless Steel

Fitment:

  • Universal

Notes:

  • 1 Year Limited Warranty

 

 

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 62031634008

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N. Hale
Charlottesville, US
★★★★★ 3
Runs big, and fabric may not be same color as picture
Color: Medium Grey, Size: 16, Color: Medium Grey, Size: 16
This suit was a good find for us, as we usually dress up for church, and my 13 yo son often wears suits. He normally wears a size 16, so that’s what we ordered, and in dark charcoal gray. The suit we got was a light, heathered gray that didn’t look much like the one in the picture. It was very wrinkly and thin, and a little scratchy. Also, the sleeves were way too long and the torso cut of the jacket was pretty wide. The pants were very large in the waist, but fit him decently in the length (he’s 5’4” and weighs 90 lbs). Overall the suit looked like it was drowning him, so I would order a size down unless you have a larger child/teen. Because of the ill fit, I haven’t had the chance to see what the suit looks like on him as it’s supposed to, but I guess I’ll return it or wait a year or two until he fills it out a bit more. Not overly impressed with the quality, so I’m not sure I’d pay $55 for this one again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 20, 2025
A
Verified Purchase
angela barkley
Boise, US
★★★★★ 5
Great suit!!
Color: Navy Blue, Size: 8
Got this suit for my grandson he haven’t worn it yet but it looks great!! Quality is great I love it will purchase another color!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
L
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LikeRuth2
Alexandria, US
★★★★★ 4
Beautiful
Color: Pink, Size: 16
The quality of the material could have been better....but overall my grandson received several compliments. I will order the baby blue as well. I appreciate the adjustable waistband. This is a keeper.
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Reviewed in the United States on May 30, 2026
T
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T Eddins
Alexandria, US
★★★★★ 5
Runs a little big
Color: Khaki, Size: 4
Runs a little big. My son is usually a 5T but I got him a 4T for a slimmer look
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Reviewed in the United States on April 7, 2026
R
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reyna Mitchell
Draper, US
★★★★★ 5
Suit is well made
Color: Navy Blue, Size: 8
It looks so good on him. Size is accurate. I will order again
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 5, 2026

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