Skip to content
  • 💰 Save big on your entire purchase with 20-40% off! 💰
  • 💰 Save big on your entire purchase with 20-40% off! 💰
Motorcycle Equipment StoreMotorcycle Equipment Store
  • Helmets
    • Helmet Accessories
    • Full Face
    • Modular
    • Dirt
    • Dual Sport
    • Half Helmets
    • Open Face & 3/4
  • Motorcycle Parts
    • Handlebars & Controls
    • Exhaust
    • Brakes
    • Engine
    • Audio & Speakers
    • Air & Fuel
    • Drive & Transmission
    • Batteries & Electrical
    • Lighting
    • Foot Controls
    • Filters
    • Gas & Oil Tanks
    • Bike Protection
    • Dash & Gauges
    • Body, Fairing & Fender
  • Riding Gear
    • Boots
    • Pants
    • Jackets & Vests
    • Heated Gear
    • Casual Clothing
    • Base & Mid Layers
    • Rain Gear
    • Riding Suits
    • Eyewear
    • Protection
    • Gloves
    • Jerseys
    • Race Suits
  • Motorcycle Accessories
    • Electronics & Mounts
  • Air Intake & Fuel Systems
    • Tools
    • Handlebars & Controls
    • Air Intake & Fuel Systems
    • Engine
    • Brakes
    • Seats
    • Suspension
    • Electrical & Wiring
    • Tires & Tubes
    • Fenders
    • Frame & Chassis
    • Wheels & Wheel Components
    • Drivetrain & Transmission
    • Exhaust
    • Oil Tanks
  • Best Seller
    • No products in the cart.

      Return to shop

  • Cart

    No products in the cart.

    Return to shop

 

Comp Master Ignition Advance Unit – 1970-Up Harley-Davidson Replaces OEM# 3251770T

Home / Air Intake & Fuel Systems / Electrical & Wiring
Sale!
Comp Master Ignition Advance Unit - 1970-Up Harley-Davidson Replaces OEM# 3251770T
Comp Master Ignition Advance Unit - 1970-Up Harley-Davidson Replaces OEM# 3251770T - Image 2
Comp Master Ignition Advance Unit - 1970-Up Harley-Davidson Replaces OEM# 3251770T - Image 3
Comp Master Ignition Advance Unit - 1970-Up Harley-Davidson Replaces OEM# 3251770T - Image 4
Comp Master Ignition Advance Unit - 1970-Up Harley-Davidson Replaces OEM# 3251770T -Motorcycle Equipment Store 012315 American Prime MFG Comp Master Ignition Advance Unit 1970 Up Harley Davidson Replaces OEM251770T 2
Comp Master Ignition Advance Unit - 1970-Up Harley-Davidson Replaces OEM# 3251770T -Motorcycle Equipment Store 012315 American Prime MFG Comp Master Ignition Advance Unit 1970 Up Harley Davidson Replaces OEM251770T 3
Comp Master Ignition Advance Unit - 1970-Up Harley-Davidson Replaces OEM# 3251770T -Motorcycle Equipment Store 012315 American Prime MFG Comp Master Ignition Advance Unit 1970 Up Harley Davidson Replaces OEM251770T 4

$76.40 Original price was: $76.40.$53.48Current price is: $53.48.

SKU: BG93Y 6545091952687 Categories: Air Intake & Fuel Systems, Electrical & Wiring Tags: Ebay_Ready, Material_Stainless Steel, Motorcycle Parts: Ignition Systems, Motorcycle Specific_Harley-Davidson Big Twin
  • Buy with Confidence, Get Quality
  • No-Questions-Asked Returns
  • Safe Payments, the Smart Choice
  • Efficiency meets excellence in customer care.
Browse
  • Air Intake & Fuel Systems
    • Air Intake & Fuel Systems
    • Brakes
    • Drivetrain & Transmission
    • Electrical & Wiring
    • Engine
    • Exhaust
    • Fenders
    • Frame & Chassis
    • Gas tanks
    • Gauges & Instruments
    • Handlebars & Controls
    • License Plates
    • Manuals
    • Oil Tanks
    • Seats
    • Sissy Bars
    • Suspension
    • Tires & Tubes
    • Tools
    • Wheels & Wheel Components
  • Helmets
    • Dirt
    • Dual Sport
    • Full Face
    • Half Helmets
    • Helmet Accessories
    • Modular
    • Open Face & 3/4
  • Motorcycle Accessories
    • Electronics & Mounts
  • Motorcycle Parts
    • Air & Fuel
    • Audio & Speakers
    • Batteries & Electrical
    • Bike Protection
    • Body, Fairing & Fender
    • Brakes
    • Dash & Gauges
    • Drive & Transmission
    • Engine
    • Exhaust
    • Filters
    • Foot Controls
    • Gas & Oil Tanks
    • Handlebars & Controls
    • Lighting
  • Riding Gear
    • Base & Mid Layers
    • Boots
    • Casual Clothing
    • Eyewear
    • Gloves
    • Heated Gear
    • Jackets & Vests
    • Jerseys
    • Pants
    • Protection
    • Race Suits
    • Rain Gear
    • Riding Suits
  • Description
  • Reviews (0)

Prior to 1979 all Harley-Davidson models used points type ignition, the Comp Master advance unit was created to not only upgrade a points style ignition, but to enhance the early electronic ignitions. Due to the inherent problems with Harley’s electronic ignition introduced in late 1979 many people switched back to points ignition because of the simplicity and reliability. Fits all Harley models up to the introduction of Twin Cam models.

High performance Comp Master advance assembly kits are made from a high grade stainless steel to prevent rust. The weights are then saturated with a specially formulated polymer coating that protects from heat saturation, reduces friction, strengthens the component, and makes it more efficient. Includes center bolt.

  • Shaft and plate are stainless steel machined to exact tolerances
  • Weights are heat treated and coated with high-tech polymers to ensure smooth even advance and retract movement
  • Included springs are high quality phosphate coated spring wire that allows full advance @ 1400 RPM (same as OE)
  • Hardened washers on advance weight pivots to prevent premature spring wear
  • Pre-lubricated
  • Made in the USA.

Note: There are no returns on carburetors, electrical items, full frames, hardtails or made-to-order items (such as magnetos) unless there is a manufacturer’s defect.

Reviews

There are no reviews yet.

Be the first to review “Comp Master Ignition Advance Unit – 1970-Up Harley-Davidson Replaces OEM# 3251770T” Cancel reply

Related products

Sale!
Square Spoke Invader 21 X 2.15 Spool Hub Front Wheel - Chrome
Quick View

Air Intake & Fuel Systems

Square Spoke Invader 21 X 2.15 Spool Hub Front Wheel – Chrome

$392.00 Original price was: $392.00.$96.99Current price is: $96.99.
Sale!
#2045-34 Fender Strut Mounting Kit Chrome Allen Harley FX FL Softail 2000-up
Quick View

Air Intake & Fuel Systems

#2045-34 Fender Strut Mounting Kit Chrome Allen Harley FX FL Softail 2000-up

$30.28 Original price was: $30.28.$21.20Current price is: $21.20.
Sale!
Mini Ham Can Air Cleaner - CV Carb
Quick View

Air Intake & Fuel Systems

Mini Ham Can Air Cleaner – CV Carb

$224.95 Original price was: $224.95.$97.99Current price is: $97.99.
Sale!
Predator III 2-Up Seat - Smooth - 1996-2003 Harley-Davidson FXD/FXDC/FXDL/FXDX/FXDWG
Quick View

Air Intake & Fuel Systems

Predator III 2-Up Seat – Smooth – 1996-2003 Harley-Davidson FXD/FXDC/FXDL/FXDX/FXDWG

$383.95 Original price was: $383.95.$99.99Current price is: $99.99.
Sale!
#2398-9 Threaded Stud Installation Tool Kit 1/4 - 3/8 - 7/16 Coarse And Fine Thread
Quick View

Air Intake & Fuel Systems

#2398-9 Threaded Stud Installation Tool Kit 1/4 – 3/8 – 7/16 Coarse And Fine Thread

$91.08 Original price was: $91.08.$63.76Current price is: $63.76.
Sale!
#3031-4 Upper Pushrod Covers Inner CAD Harley Sportster 57-85 OHV Big Twin 36-83
Quick View

Air Intake & Fuel Systems

#3031-4 Upper Pushrod Covers Inner CAD Harley Sportster 57-85 OHV Big Twin 36-83

$32.35 Original price was: $32.35.$22.65Current price is: $22.65.
Sale!
10-stud Clutch Hub Puller
Quick View

Air Intake & Fuel Systems

10-stud Clutch Hub Puller

$32.99 Original price was: $32.99.$23.09Current price is: $23.09.
Sale!
Sporty Solo - Black Horizontal Pleated - 1982-2003 Harley-Davidson Sportsters
Quick View

Air Intake & Fuel Systems

Sporty Solo – Black Horizontal Pleated – 1982-2003 Harley-Davidson Sportsters

$149.99 Original price was: $149.99.$96.99Current price is: $96.99.
MY ACCOUNT
  • My account
  • Wishlist
  • Checkout
  • Cart
ABOUT US
  • About Us
  • Returns & Exchanges
  • Delivery
  • FAQ
  • Contact Us
LEGAL
  • Privacy Policy
  • Shipping & Returns
  • Payment Method
  • Term and Conditions
Signup for Newsletter

Sign up for exclusive offers, original stories, events and more.

    Copyright 2026 © www.motorcycle-active.com
    • Helmets
      • Helmet Accessories
      • Full Face
      • Modular
      • Dirt
      • Dual Sport
      • Half Helmets
      • Open Face & 3/4
    • Motorcycle Parts
      • Handlebars & Controls
      • Exhaust
      • Brakes
      • Engine
      • Audio & Speakers
      • Air & Fuel
      • Drive & Transmission
      • Batteries & Electrical
      • Lighting
      • Foot Controls
      • Filters
      • Gas & Oil Tanks
      • Bike Protection
      • Dash & Gauges
      • Body, Fairing & Fender
    • Riding Gear
      • Boots
      • Pants
      • Jackets & Vests
      • Heated Gear
      • Casual Clothing
      • Base & Mid Layers
      • Rain Gear
      • Riding Suits
      • Eyewear
      • Protection
      • Gloves
      • Jerseys
      • Race Suits
    • Motorcycle Accessories
      • Electronics & Mounts
    • Air Intake & Fuel Systems
      • Tools
      • Handlebars & Controls
      • Air Intake & Fuel Systems
      • Engine
      • Brakes
      • Seats
      • Suspension
      • Electrical & Wiring
      • Tires & Tubes
      • Fenders
      • Frame & Chassis
      • Wheels & Wheel Components
      • Drivetrain & Transmission
      • Exhaust
      • Oil Tanks
    • Best Seller
    • Login

    Login

    Lost your password?

    Register

    Your personal data will be used to support your experience throughout this website, to manage access to your account, and for other purposes described in our privacy policy.