EDR Performance Denso IU31a Racing Sparkplugs
EDR Performance Denso IU31a Racing Sparkplugs
EDR Performance is pleased to share with everyone the exact racing sparkplug we run almost exclusively in our race builds.
The Denso IU31a is our go to sparkplug! They are outstanding quality, a colder (@10.5 converted to NGK ranges) heat range for your increased compression racing or track day bike. These plugs with their semi surface discharge design allow us more room to play with timing safely, especially important with various racing fuels you may be using.
Multiple bike fitment (Contact us if you are not sure) but many are:
-Yamaha R6 1998-2024
-Yamaha R1 1998-2008
-Yamaha MT/FZ/R7 all years
-Yamaha R3 all years
-Suzuki GSXR1000/R 2001-2024
-Suzuki GSXR600/750 1996-2024
-Suzuki Hayabusa 1999-2024
-SV 650 all years
-Kawasaki ZX6R/636 2007-2024
-Kawasaki ZX10R/RR 2004-2015
-Kawasaki ZX-14R all years
-Aprilia RSV4 1000/1100 all years
-Aprilia RS660 all years
-MV Agusta F4/F3 all years
-Many other models as well
-
Denso Iridium Power spark plugs feature a 0.4mm iridium tipped laser welded fine wire center electrode that reduces required voltage and improves firing performance. Low angled ground electrode improves heat transfer and is resistant to vibration. Machine rolled threads prevent seizing or cross threading during installation and removal. 100% pre-fired to assure the highest quality possible. Purified alumina powder insulator provides exceptional strength and thermal conductivity. Five rib insulator prevents flashover. Copper-glass seal bonds center electrode and insulator for a gas-tight seal.
SOLD EACH
These products are intended for closed course off road competition use only. Use of this product for any other purpose is strictly prohibited. Buyer assumes all responsibility to local laws, regulations and use. Racing parts are never legal for sale or use in California or any pollution controlled vehicle.
Related Products
EDR Performance Oil Funnel Screw in vented bike specific oil change Red Silver Black
$ 19.95
EDR Performance screw in oil funnel! UPDATED 5-24! New and improved! EDR Performance has been building, tuning and servicing motorcycles...
EDR Performance Fork Travel Indicators 41 - 44 mm Red Blue Green Black
$ 12.00
EDR Performance fork travel indicators are here! -No more ugly zip ties -No more rubber bands that dry rot and...
RACETORX LADYBIRD RESERVOIR BRACKETS Stainless Steel
$ 15.00
Race bikes often create difficulties when mounting brake reservoirs. The stock location will often rub on bodywork, or sometimes the...
Yamaha - EDR Performance Tuned Unlocked ECU Re-Flash
$ 395.00
EDR PERFORMANCE ECU is the leader in custom tuned & de-restricted ECU tuning for your Yamaha motorcycles. Please be...
EDR R6 Performance Clutch Kit 2006 - 2024 Yamaha
$ 249.00
$ 321.00
EDR R6 Performance Clutch Kit for Racing + Track days FINALLY available to the public and ease of drop in!...
EDR Performance Yamaha R6 2008-2026 Velocity Stacks
$ 795.00
The EDR Performance R6 Velocity stack kit for the 2008-2026 models are the PROVEN best for your R6. No other...
Yamaha R1 EDR Velocity Stacks - 2020-2026 - R1/R1S/R1M
$ 925.00
$ 1,050.00
The EDR Performance Velocity stack kit is finally HERE for the 2020-2026 Yamaha R1, R1M & R1S This set is...
RACETORX MOTORCYCLE FRONT AND REAR GP-STYLE BRAKE RESERVOIR KIT
$ 31.99
Racetorx Brake Reservoir Res Delete Kits This kit is ideal for replacing the clumsy bulky looking street setup of the...
EDR Performance Velocity Stacks for Triumph 765 S / R / RS / Moto 2 Daytona Street Triple Moto 2 2017 - 2025
$ 245.00
$ 341.00
The EDR Performance Triumph 765 Street Triple Moto2 Daytona Velocity stack kit Our Velocity Stacks are game-changers and make your...
Racetorx Honda VTR RC51 SP CBR Cb Gear shift support RTX218
$ 76.00
Racetorx Honda VTR RC51 SP CBR Cb Gear shift support RTX218 Description We at Racetorx are the largest manufacturer of...
2006-2025 Yamaha R6 HD Cylinder Head Stud Kit
$ 299.00
EDR Yamaha R6 HD Head Stud Kits FINALLY A SOLUTION FOR WEAK HEAD GASKETS ON YAMAHA R6 ENGINES! FITMENT: 2006-2025...
Racetorx Yamaha MT10 / FZ10 / R1 / R1M Gear Shift Support RTX251
$ 73.00
Racetorx Yamaha MT10 / FZ10 / R1 / R1M Gear Shift Support RTX251 Description We at Racetorx are the largest...
Racetorx Triumph Daytona 675 13-17 / Street Triple 765 2017+ / Tiger 800 900 Gear shift support
$ 74.00
Description We at Racetorx are the largest manufacturer of gear shift supports to suit a vast number of motorcycles. Our...
EDR Performance main bearing and crankcase stud, bolt kit for the 2015 -2024 R1/R1M/R1S contains 59 pcs
$ 449.00
$ 699.00
WORLD FAMOUS EDR R1 Crankshaft/Crankcase HD Stud kit! EDR Performance is the worlds ONLY shop that has a...
EDR Performance Block Off Plates S M O G Honda Ducati Kawasaki Suzuki BMW Aprilia Yamaha
$ 18.00
The new EDR Performance engine smog block off plates are now available! 100% Made in USA *Most models are...
Racetorx Kawasaki ZX6RR Gear Shift Support 2013-2024
$ 189.00
RaceTorx RTX578 2013-2024 ZX6R ZX-636 ZX-6R Shift Support Racetorx are the largest manufacturer of gear shift supports to suit a...
Racetorx Ducati Panigale/streetfighter V4 Gear shift support
$ 193.00
Description We at Racetorx are the largest manufacturer of gear shift supports to suit a vast number of motorcycles. Our...
EDR Performance HD Cylinder Head stud kit R7 FZ-07 MT-07 Tracer 700 XSR700 Yamaha
$ 249.00
$ 295.00
EDR Performance head stud bolt kit for Yamaha 700cc Twin R7, FZ07 MT07 Tracer 700 & XSR700 FITMENT: 2014+ FZ07...
EDR Yamaha R3 / MT-03 VELOCITY STACKS
$ 75.00
The EDR Performance 2015-2024 Yamaha R3/MT-03 Velocity stack kit Our EDR Performance velocity stack kit is a must have for R3...
EDR Performance Power Lid for the R7 / MT07 / FZ07 / XSR700 Intake filter lid
$ 79.00
$ 90.99
EDR Performance Yamaha R7, XSR700, MT-07 + FZ-07 Power Lid! Get yourself all the HP you paid for AND...
Racetorx Kawasaki ZX10 ZX10R 2011-present Gear shift support RTX500
$ 178.00
Racetorx Kawasaki ZX10 ZX10R 2011-present Gear shift support RTX500 Description We at Racetorx are the largest manufacturer of gear shift...
Racetorx Ducati Panigale V2 Gear shift support RTX440
$ 181.44
Racetorx Ducati Panigale V2 Gear shift support RTX440 Description We at Racetorx are the largest manufacturer of gear shift supports...
EDR R9 MT09 XSR900 Heavy Duty Cylinder head stud kit Yamaha
$ 269.00
$ 299.00
EDR Performance head stud bolt kit for new 2025 Yamaha R9 Plus: 2014+ MT-09, FZ-09,XSR900, FJ-09 & Tracer 900 The...
EDR Yamaha R1 Velocity Stacks - R1/R1S/R1M - 2015-2019
$ 925.00
$ 1,050.00
The EDR Performance R1 Velocity Stack Kit 2015- 2019 This is for the 2015-2019 R1, R1s & R1m models. Hands...
Galespeed Fluid Reservoir tank .32ml
$ 39.59
.32ml brake fluid tank with mounting bracket that rotates 360 degrees around the tank. Since it can be moved to any position, it...
Racetorx Kawasaki ZH2 / H2 Gear shift support RTX519
$ 114.00
Racetorx Kawasaki ZH2 / H2 Gear shift support RTX519 *Available in Black, Red, Gold Description We at Racetorx are the...
RACETORX YAMAHA MT07 / T7 TENERE / R7 / TRACER700 GEAR SHIFT SUPPORT
$ 104.00
We at Racetorx are the largest manufacturer of gear shift supports to suit a vast number of motorcycles. Our gear...
Racetorx Yamaha R6 13S 06-16 Gear Shift Support
$ 208.95
RTX 670 Description Our gear shift supports help prevent mis-shifts / false neutrals and provide a more positive gear change....
EDR Ninja 400 500 ZX4RR WORKS Clutch Spring Kit
$ 39.95
EDR Performance Clutch Spring kit- HD A MUST for any hard ridden, track day or racing Ninja! Kawasaki Ninja...
DNA Kawasaki ZX10R / ZX-10R / ZX10RR / ZX-10RR Air Filter DNA-P-K10S16-0R
$ 168.00
DNA Kawasaki ZX-10R Air Filter for the 2016 + Models (includes RR). FITMENT: ZX-10R 2016+ ZX-10R ABS 2016+ ZX-10RR 2016+...
RACETORX HONDA VTR SP1 | VTR SP2 & CBR929 RC51 RC-51 CHAIN ADJUSTERS
$ 295.00
Racetorx billet chain adjusters for RC51 SP1 SP2 RVT1000 CBR939/954 The Racetorx chain adjusters make rear Wheel maintenance tasks...
Racetorx Yamaha MT09 FZ09 XSR900 Niken Tracer Gear Shift Support RTX353
$ 74.00
Racetorx Yamaha MT09 FZ09 XSR900 Niken Tracer Gear Shift Support RTX353 Description We at Racetorx are the largest manufacturer of...
Yamaha + Kawasaki Replacement Valves -Titanium Valves R6, ZX6R, ZX-R6, 636, ZX636
$ 649.00
Titanium Replacement valves for the 2006-2026 Yamaha R6 and the 2009-2026 ZX6R/ZX636 motorcycles by Vance & Hines Special order item...
Samco Hoses 2006- 2024 Yamaha R6 RACE KIT YAM-58
$ 441.00
$ 444.00
Yamaha YZF R6 2006 > 2025 6 Piece Race Design Samco Silicone Hose Kit This is a high performance product...
EDR Performance Intake Plugs Universal BMW HONDA SUZUKI KAWASAKI YAMAHA KTM DUCATI
$ 40.00
EDR Performance intake port plugs. Great for transport and or storage! EDR Performance has engines shipped in every week for...
Racetorx Kawasaki Ninja 1000 | Z900 (RS) | Z1000 (SX/SE) | Versys Gear Shift Support
$ 74.00
Description We at Racetorx are the largest manufacturer of gear shift supports to suit a vast number of motorcycles. Our...
Vesrah VD-248RJL Motorcycle Race Brake Pads
$ 99.00
The RJL Brake Pad compound is the perfect choice for Aggressive Street Riders, Track Day Riding and Novice Racers. ...
EDR Performance billet DLC coated racing camshaft set Yamaha R1 2015-2024 R1M DLC
$ 1,995.00
$ 2,148.00
EDR Performance Racing DLC FINISHED NEW BILLET CAMSHAFTS with Adjustable timing gears FITMENT: R1 & R1M 2015-2024 *R1s requires non...
Racetorx Aprilia V4 & Rsv4 gear shift support RTX219
$ 84.24
Racetorx Aprilia V4 & Rsv4 1000 Rsv4 1100 gear shift support RTX219 Description We at Racetorx are the largest manufacturer...
EDR Performance Hooded Windbreaker Zip Up Jacket in Black & White
$ 75.00
In stock! Lightweight Race hooded windbreaker. Water resistant, breathable, & perfect for Spring and Fall weather. Looks great over our...
EDR Performance 83° Valve Stems
$ 29.99
$ 34.95
Valve is angled at 83° for easier access for inflating and checking tire pressure. Made in Italy Fixed to the...
Yamaha, R6, 2006-2020, Samco Sport 6 Piece Radiator Hose Kit
$ 429.95
This is a high performance product which replaces your standard factory rubber hoses to a high quality Samco Sport silicone...
EDR Performance Yamaha R6 Slotted Cam Sprockets 2006-2024 Adjustable Microfinished graves timing gears
$ 135.00
$ 144.00
EDR Performance Yamaha R6 Slotted Cam Sprockets 2006-2024 adjustable timing gears EDR Performance Slotted Cam Sprockets allow for precise cam...
Galespeed Elaborate Brake Master Cylinder 19mm
$ 600.60
G Galespeed VRE Elaborate 19mm (Variable Ratio Elaborate) Brake master cylinder. Galespeed designed & developed "Variable lever...
EDR Adjustable Cam Sprocket Set Yamaha R1 2015 - 2025 MT-10 FZ-10
$ 342.00
EDR Performance Yamaha R1 / FZ10 / MT10 Slotted Cam Sprockets. EDR Performance Slotted Cam Sprockets allow for precise...
Racetorx Aprilia GEN1 RSV, Mille, GEN2 RSVR, Tuono R & Falco gear shift support
$ 87.48
Description We at Racetorx are the largest manufacturer of gear shift supports to suit a vast number of motorcycles. Our...
EDR Performance main bearing and crankcase bolt kit for the 2006+ R6 contains 53 pcs.
$ 349.00
*PLEASE CONTACT FOR AVAILABILITY* EDR Performance main bearing and crankcase bolt kit for the 2006+ R6 contains 53 pcs. ...
Yamaha, R1, R1M, FZ-10, 2015+, Samco, Samco Silicone Hose Kit Bypass, Kit
$ 358.95
This is a high performance product which replaces your standard factory rubber hoses to a high quality Samco Sport silicone...
Spider Racing- Handlebar Weights (Bar-Ends)
$ 35.00
Sold in Pairs All tubes with inside diameter from 13mm to 18mm 3 special rubber couples for various diameters that...
Spider Racing- EVO BRAKE LEVER PROTECTION
$ 150.00
EVO Front Brake Lever Guard Secure and adjustable mounting system for precise installation on all types of handlebars.Expander compatible with...