440 Thumper Kit .vs. 470 Thumper Kit

Reply Subscribe

Thread Tools

Search this Thread

Dec 29, 2002 | 01:46 PM

llknowlesll

Thread Starter

Trailblazer

Joined: Dec 2002

Posts: 77

Likes: 0

440 Thumper Kit .vs. 470 Thumper Kit

I was looking to boring my quad out. Thumper makes a 440 big bore kit and a 470 big bore kit. Which one should I go with? Is the 470 kit as reliable as the 440? Have you heard anything about either one?

llknowlesll

Dec 30, 2002 | 11:49 AM

LT250RSuperstar

Pro Rider

Joined: Jun 2002

Posts: 766

Likes: 0

440 Thumper Kit .vs. 470 Thumper Kit

I know you want power but what is your purpose for it? Are you planning to race it in the open class or 440 under?

Reply Subscribe

Related Topics

Thread

Thread Starter

Forum

Replies

Last Post

Wolverine Porting ; Thanks Thumper 4x4

boomer

Yamaha

Sep 19, 2004 08:05 PM

FMF

HondaMan400EX

Honda

Jul 11, 2003 11:44 AM

new to this site, thinking bout getting a ds

djcheez

CAN-AM (BRP)

May 7, 2003 02:41 AM

ARG! Decisions Decisions

Last1Left

Honda

Jul 21, 2002 02:35 PM

ARG! Decisions Decisions

Last1Left

Yamaha

Jul 16, 2002 01:14 AM