4-1 header outlet
Guest
Posts: n/a
Which of the following 4-1 headers measure at 2.5 inches in diameter at the outlet?
SR
HVE
I did some searching and couldn't get a straight answer. Some peoples 4-1 headers measured 2.125. Is it one or the other, or both? I'd appreciate any help guys.
SR
HVE
I did some searching and couldn't get a straight answer. Some peoples 4-1 headers measured 2.125. Is it one or the other, or both? I'd appreciate any help guys.
Super Moderator

Joined: May 2001
Posts: 11,851
Likes: 2
From: Rancho Palos Verdes, CA
Vehicle: 2008 Toyota Prius 2006 Suzuki SV650S
SR's are 2.125 for the 4-1
HVE's are 2.5" for the 4-1
HVE's do NOT come with the mounting flange welded on, so you will have to have that done by your exhaust shop at the time of install.
HVE's are 2.5" for the 4-1
HVE's do NOT come with the mounting flange welded on, so you will have to have that done by your exhaust shop at the time of install.
I have these headers, from RPW that I bought off one of our members here...I think they are from HVE...I was wondering if I can get a flex pipe from SR, or where I can get one that matches up?
I will send Random a pic of my headers if he wants, they are not polished at all, and look kind of dinjy...the outlet looks a little crooked...I haven't installed them yet because I have had the time to leave my car in the shop for a day.
I will send Random a pic of my headers if he wants, they are not polished at all, and look kind of dinjy...the outlet looks a little crooked...I haven't installed them yet because I have had the time to leave my car in the shop for a day.
Super Moderator

Joined: May 2001
Posts: 11,851
Likes: 2
From: Rancho Palos Verdes, CA
Vehicle: 2008 Toyota Prius 2006 Suzuki SV650S
Go ahead and e-mail me the pics.
Only place I've found that sells flex pipes is www.jcwhitney.com
They are NOT cheap. About $60 to $80 for a 2.5" unit.
Only place I've found that sells flex pipes is www.jcwhitney.com
They are NOT cheap. About $60 to $80 for a 2.5" unit.
Guest
Posts: n/a
Super Moderator

Joined: May 2001
Posts: 11,851
Likes: 2
From: Rancho Palos Verdes, CA
Vehicle: 2008 Toyota Prius 2006 Suzuki SV650S
QUOTE
9o7TiB7o9:
Hey why are the 4-1 Headers Type D so much higher priced then the rest?
They are "race" headers. They have holes for the o2 sensors, but no space for cats (figuring if you race...you don't need no stinkin' cats).
Hey why are the 4-1 Headers Type D so much higher priced then the rest?


