440EX spark plug

Reply Subscribe

Thread Tools

Search this Thread

Dec 24, 2003 | 11:56 AM

420EX

Thread Starter

Pro Rider

Joined: Sep 2003

Posts: 921

Likes: 0

440EX spark plug

i have an 02 400ex with all the mods listed in my signiture and im looking to buy a new plug. What is the best spark plug for my appliction?

Dec 25, 2003 | 01:10 AM

cals400ex

Pro Rider

Joined: Jul 2000

Posts: 1,155

Likes: 0

440EX spark plug

je and ross both claim the colder plug is highly recommended when running a higher compression piston. i run the colder plug besides in the winter months. the colder plug is a dpr9z.

Reply Subscribe

Related Topics

Thread

Thread Starter

Forum

Replies

Last Post

1996 sportsman 400 2 stroke

Big bousse

Polaris

Sep 26, 2015 10:42 AM

Hot Weather Starting

cornermike

Polaris

Jul 30, 2015 06:37 AM

2003 Honda Trx300 Electrical Problem

ScopeZ_

Honda

Jul 28, 2015 01:44 AM

Arctic Cat Bearcat 454 starting problem

Ty64

Technical and How-To Articles

Jul 25, 2015 02:02 PM

yz426f wont start

Dirtbikemike1

Yamaha

Jul 21, 2015 04:13 AM