Spark Plug
Harley Bike Spark Plugs at JJ Motorsports
Keep your Harley running strong with premium spark plugs from JJ Motorsports, featuring standard and iridium designs for reliable ignition and maximum performance on Sportster XL, Twin Cam, Evo, and Big Twin engines. These high-quality plugs deliver hotter sparks and longer life for everyday riding or performance builds.
Shop Drag Specialties spark plugs for proven reliability. Explore related categories such as Harley lights and electrical for coils and wires, or Harley for exhaust and tuning to complete your ignition system.
Top Harley Spark Plugs
- Drag Specialties Spark Plugs 79-85 XL E18-6661SDS – Standard plugs for 1979-1985 XL Sportster; classic heat range for Ironhead engines.
- Drag Specialties Iridium Spark Plugs TC/XL E18-6655IDS – Iridium plugs for Twin Cam and Sportster; extended life and hotter spark.
- Drag Specialties Spark Plugs 99-17 TC/XL E18-6655SDS – Standard plugs for 1999-2017 Twin Cam and XL; OEM-style performance.
Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
-
NGK SPARK PLUGS Spark Plug - SILMAR7A9S 93675
NGK SPARK PLUGS
$26.95NGK SPARK PLUGS Spark Plug - SILMAR7A9S21030514- SKU:
- 21030514
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MODEL:
- SILMAR7A9S
- SPARK GAP IMPERIAL:
- 0.035'
- TERMINAL CONFIGURATION:
- SOLID TERMINAL
- THREAD REACH METRIC:
- 26.5 MM
- UNITS:
- EACH
- ELECTRICAL RESISTANCE:
- 5K OHMS
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- TYPE:
- RESISTOR
- CENTER ELECTRODE PROJECTION:
- NON-PROJECTED
- ELECTRODE TIP MATERIAL:
- IRIDIUM
- HEAT RANGE:
- 7
- HEX SIZE METRIC:
- 14 MM
- SPARK GAP METRIC:
- 0.9 MM
- CENTER ELECTRODE TYPE:
- FINE WIRE
- GROUND ELECTRODE SHAPE:
- STANDARD
- PRODUCT NAME:
- SPARK PLUG
- RIDING STYLE:
- UTV
- STYLE:
- LASER IRIDIUM
$26.95 -
NGK SPARK PLUGS NGK Spark Plug 91175
NGK SPARK PLUGS
$16.95NGK's Laser Iridium Spark Plugs Provide Superior Ignitability and Long Service Life, Fine Wire Iridium Tipped Center Electrode and Fine Wire Platinum Tipped Ground Electrode Ensures Slow Wear Rate Providing Stable Idle, Superior Anti Fouling, Improved...21030393- SKU:
- 21030393
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- ELECTRODE TIP MATERIAL:
- IRIDIUM
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- HEAT RANGE:
- 7
- PRODUCT NAME:
- SPARK PLUG
- THREAD SIZE:
- 10 MM
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- CENTER ELECTRODE TYPE:
- FINE WIRE
- ELECTRICAL RESISTANCE:
- -
- RIDING STYLE:
- STREET
- SPARK GAP IMPERIAL:
- 0.035'
- TERMINAL CONFIGURATION:
- SOLID TERMINAL
- UNITS:
- EACH
- GROUND ELECTRODE SHAPE:
- TAPER CUT
- MODEL:
- CR7EIA-9
- STYLE:
- IRIDIUM
- TYPE:
- RESISTOR
$16.95 -
DRAG SPECIALTIES Spark Plugs - '02-'17 VROD E18-6656SDS
DRAG SPECIALTIES
$15.55Plugs have a unique look with a black ceramic body and bold red logo/script, Insulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulation, Multi-rib design of the insulator eliminates flashover, Nickel-plated...21030197- SKU:
- 21030197
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- HEX SIZE METRIC:
- 16 MM
- STYLE:
- COPPER
- TERMINAL CONFIGURATION:
- REMOVABLE NUT
- GROUND ELECTRODE SHAPE:
- STANDARD
- MODEL:
- DCPR8E
- THREAD REACH:
- 19,1 MM (3/4')
- CENTER ELECTRODE TYPE:
- STANDARD
- ELECTRODE TIP MATERIAL:
- NICKEL ALLOY
- THREAD REACH METRIC:
- 19.1 MM
- HEAT RANGE:
- 8
- PRODUCT NAME:
- SPARK PLUG
- RIDING STYLE:
- STREET
- TYPE:
- RESISTOR
- UNITS:
- PAIR
$15.55 -
DRAG SPECIALTIES Spark Plugs - M8/XG E18-6724DS
DRAG SPECIALTIES
$15.55Plugs have a unique look with a black ceramic body and bold red logo/script, Insulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulation, Multi-rib design of the insulator eliminates flashover, Nickel-plated...21030358- SKU:
- 21030358
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- GROUND ELECTRODE SHAPE:
- STANDARD
- HEAT RANGE:
- 6
- STYLE:
- COPPER
- THREAD REACH:
- 19,1 MM (3/4')
- HEX SIZE METRIC:
- 16 MM
- MODEL:
- CR9E
- PRODUCT NAME:
- SPARK PLUG
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- RIDING STYLE:
- STREET
- TERMINAL CONFIGURATION:
- SOLID TERMINAL
- CENTER ELECTRODE TYPE:
- STANDARD
- ELECTRODE TIP MATERIAL:
- NICKEL ALLOY
- THREAD REACH METRIC:
- 19.1 MM
- TYPE:
- RESISTOR
- UNITS:
- PAIR
$15.55 -
DRAG SPECIALTIES Iridium Spark Plugs - M8/XG E18-6724IDS
DRAG SPECIALTIES
$33.23Iridium electrode is smaller than a standard electrode; requires less voltage, Hotter spark and extended spark plug service life compared to conventional plugs, Has the distinctive black ceramic with red lettering and gold-colored corrosion-protected...21030359- SKU:
- 21030359
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- ELECTRODE TIP MATERIAL:
- IRIDIUM
- GROUND ELECTRODE SHAPE:
- STANDARD
- HEAT RANGE:
- 6
- TERMINAL CONFIGURATION:
- REMOVABLE NUT
- RIDING STYLE:
- STREET
- THREAD REACH METRIC:
- 11.1 MM
- CENTER ELECTRODE TYPE:
- NECKED DOWN
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- HEX SIZE METRIC:
- 16 MM
- PRODUCT NAME:
- SPARK PLUG
- CENTER ELECTRODE PROJECTION:
- NON-PROJECTED
- MODEL:
- DCPR7EIX
- STYLE:
- IRIDIUM
- TYPE:
- RESISTOR
- UNITS:
- PAIR
$33.23 -
DRAG SPECIALTIES Spark Plugs - '79-'85 XL E18-6661SDS
DRAG SPECIALTIES
$13.47Plugs have a unique look with their black ceramic body and bold red logo/script, Insulator is made of 95% pure alumina; features strong resistance to heat shock and superior insulation, Multi-rib design of insulator eliminates flashover, Nickel-plated...21030205- SKU:
- 21030205
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- CENTER ELECTRODE TYPE:
- STANDARD
- ELECTRODE TIP MATERIAL:
- NICKEL ALLOY
- PRODUCT NAME:
- SPARK PLUG
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- TYPE:
- RESISTOR
- GROUND ELECTRODE SHAPE:
- STANDARD
- HEAT RANGE:
- 6
- MODEL:
- BPR6HS
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- STYLE:
- COPPER
- TERMINAL CONFIGURATION:
- THREADED STUD
$13.47 -
DRAG SPECIALTIES Plug Holder - Chrome - F/H-D 33-0030-SC1
DRAG SPECIALTIES
$39.47A chrome-plated replica of the spark plug holder found on early Panheads, updated to accept even late-model Shovelhead deep-reach plugs, Metal holder clamps onto the rear frame tube behind the oil tank on all Big Twin models and holds two extra spark...DS196091- SKU:
- DS196091
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- MATERIAL:
- STEEL
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CADDY
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- SPARK PLUG
$39.47 -
DRAG SPECIALTIES Iridium Spark Plugs - TC/XL E18-6655IDS
DRAG SPECIALTIES
$33.23Iridium electrode is smaller than a standard electrode; requires less voltage, Hotter spark and extended spark plug service life compared to conventional plugs, Has the distinctive black ceramic with red lettering and gold-colored corrosion-protected...21030231- SKU:
- 21030231
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- STYLE:
- IRIDIUM
- TYPE:
- RESISTOR
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- CENTER ELECTRODE TYPE:
- NECKED DOWN
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- HEX SIZE METRIC:
- 16 MM
- MODEL:
- CR9EIX
- PRODUCT NAME:
- SPARK PLUG
- ELECTRODE TIP MATERIAL:
- IRIDIUM
- GROUND ELECTRODE SHAPE:
- STANDARD
- HEAT RANGE:
- 7
- TERMINAL CONFIGURATION:
- REMOVABLE NUT
- THREAD REACH METRIC:
- 17.5 MM
$33.23 -
DRAG SPECIALTIES Spark Plugs - '99-'17 TC/XL E18-6655SDS
DRAG SPECIALTIES
$15.55Plugs have a unique look with a black ceramic body and bold red logo/script, Insulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulation, Multi-rib design of the insulator eliminates flashover, Nickel-plated...21030196- SKU:
- 21030196
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- HEX SIZE METRIC:
- 16 MM
- STYLE:
- COPPER
- CENTER ELECTRODE TYPE:
- STANDARD
- ELECTRODE TIP MATERIAL:
- NICKEL ALLOY
- MODEL:
- DCPR7E
- THREAD REACH METRIC:
- 19.1 MM
- TYPE:
- RESISTOR
- GROUND ELECTRODE SHAPE:
- STANDARD
- HEAT RANGE:
- 7
- TERMINAL CONFIGURATION:
- REMOVABLE NUT
- THREAD REACH:
- 19,1 MM (3/4')
- PRODUCT NAME:
- SPARK PLUG
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
$15.55 -
DRAG SPECIALTIES Spark Plugs - '57-'78 XL E18-6660SDS
DRAG SPECIALTIES
$14.51Plugs have a unique look with their black ceramic body and bold red logo/script, Insulator is made of 95% pure alumina; features strong resistance to heat shock and superior insulation, Multi-rib design of insulator eliminates flashover, Nickel-plated...21030206- SKU:
- 21030206
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- CENTER ELECTRODE TYPE:
- STANDARD
- ELECTRODE TIP MATERIAL:
- NICKEL ALLOY
- PRODUCT NAME:
- SPARK PLUG
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- GROUND ELECTRODE SHAPE:
- STANDARD
- HEAT RANGE:
- 6
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- TERMINAL CONFIGURATION:
- THREADED STUD
- TYPE:
- NON-RESISTOR
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- STYLE:
- COPPER
$14.51 -
DRAG SPECIALTIES Spark Plugs - '71-'85 XL E18-6658SDS
DRAG SPECIALTIES
$13.47Plugs have a unique look with their black ceramic body and bold red logo/script, Insulator is made of 95% pure alumina; features strong resistance to heat shock and superior insulation, Multi-rib design of insulator eliminates flashover, Nickel-plated...21030204- SKU:
- 21030204
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- CENTER ELECTRODE TYPE:
- STANDARD
- ELECTRODE TIP MATERIAL:
- NICKEL ALLOY
- PRODUCT NAME:
- SPARK PLUG
- RIDING STYLE:
- STREET
- GROUND ELECTRODE SHAPE:
- STANDARD
- HEAT RANGE:
- 6
- MODEL:
- B6L
- STYLE:
- COPPER
- UNITS:
- PAIR
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- TYPE:
- NON-RESISTOR
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- TERMINAL CONFIGURATION:
- THREADED STUD
$13.47 -
DRAG SPECIALTIES Spark Plugs - '48-'74 BT E18-6664SDS
DRAG SPECIALTIES
$13.47Plugs have a unique look with their black ceramic body and bold red logo/script, Insulator is made of 95% pure alumina and features strong resistance to heat shock and superior insulation, Multi-rib design of insulator eliminates flashover, Nickel-plated...21030207- SKU:
- 21030207
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- HEAT RANGE:
- 5
- STYLE:
- COPPER
- GROUND ELECTRODE SHAPE:
- STANDARD
- PRODUCT NAME:
- SPARK PLUG
- THREAD REACH METRIC:
- 8 MM
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- RIDING STYLE:
- STREET
- TERMINAL CONFIGURATION:
- THREADED STUD
- CENTER ELECTRODE TYPE:
- STANDARD
- ELECTRODE TIP MATERIAL:
- NICKEL ALLOY
- HEX SIZE METRIC:
- 20.6 MM
- MODEL:
- R5670-5
- TYPE:
- RESISTOR
- UNITS:
- PAIR
$13.47 -
DRAG SPECIALTIES Spark Plugs - '75-'99 BT (HOT) E18-6657SDS
DRAG SPECIALTIES
$15.55Plugs have a unique look with a black ceramic body and bold red logo/script, Insulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulation, Multi-rib design of the insulator eliminates flashover, Nickel-plated...21030198- SKU:
- 21030198
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- GROUND ELECTRODE SHAPE:
- STANDARD
- STYLE:
- COPPER
- TERMINAL CONFIGURATION:
- REMOVABLE NUT
- CENTER ELECTRODE TYPE:
- STANDARD
- ELECTRODE TIP MATERIAL:
- NICKEL ALLOY
- MODEL:
- BPR4ES-11
- RIDING STYLE:
- STREET
- THREAD REACH METRIC:
- 19.1 MM
- HEAT RANGE:
- 4
- HEX SIZE METRIC:
- 16 MM
- PRODUCT NAME:
- SPARK PLUG
- THREAD REACH:
- 19,1 MM (3/4')
- TYPE:
- RESISTOR
- UNITS:
- PAIR
$15.55 -
DRAG SPECIALTIES Spark Plugs - '75-'99 BT (MID) E18-6662SDS
DRAG SPECIALTIES
$15.55Plugs have a unique look with a black ceramic body and bold red logo/script, Insulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulation, Multi-rib design of the insulator eliminates flashover, Nickel-plated...21030199- SKU:
- 21030199
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- CENTER ELECTRODE TYPE:
- STANDARD
- ELECTRODE TIP MATERIAL:
- NICKEL ALLOY
- TYPE:
- RESISTOR
- UNITS:
- PAIR
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- RIDING STYLE:
- STREET
- STYLE:
- COPPER
- THREAD REACH METRIC:
- 19.1 MM
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- HEX SIZE METRIC:
- 16 MM
- MODEL:
- BPR5ES-11
- PRODUCT NAME:
- SPARK PLUG
- GROUND ELECTRODE SHAPE:
- STANDARD
- HEAT RANGE:
- 5
- TERMINAL CONFIGURATION:
- REMOVABLE NUT
- THREAD REACH:
- 19,1 MM (3/4')
$15.55 -
DRAG SPECIALTIES Spark Plugs - '75-'99 BT (COLD E18-6663SDS
DRAG SPECIALTIES
$14.51Plugs have a unique look with a black ceramic body and bold red logo/script, Insulator is made of 95% pure alumina, features strong resistance to heat shock and superior insulation, Multi-rib design of the insulator eliminates flashover, Nickel-plated...21030203- SKU:
- 21030203
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- GROUND ELECTRODE SHAPE:
- STANDARD
- PRODUCT NAME:
- SPARK PLUG
- RIDING STYLE:
- STREET
- CENTER ELECTRODE TYPE:
- STANDARD
- ELECTRODE TIP MATERIAL:
- NICKEL ALLOY
- GROUND ELECTRODE CONFIGURATION:
- SINGLE
- THREAD REACH METRIC:
- 19.1 MM
- TYPE:
- RESISTOR
- HEAT RANGE:
- 7
- STYLE:
- COPPER
- TERMINAL CONFIGURATION:
- REMOVABLE NUT
- THREAD REACH:
- 19,1 MM (3/4')
- UNITS:
- PAIR
- CENTER ELECTRODE PROJECTION:
- PROJECTED
- HEX SIZE METRIC:
- 16 MM
- MODEL:
- BPR7ES-11
$14.51Qty in Cart: 0Quantity:Price:$14.51Subtotal:
