Click on the highlighted description for illustrations.
These kits are designed for use with the HPV27 secondary & helix.
The kits are not for the Formula helix which is 3.75" (95mm) diameter.
Take note for years 1999~2003 there are some models that come with the formula helix so that now if you are not sure what you have, you can go to the sled and check the secondary, the model you need has an "Adjustment ring cam" with 3x 10mm bolts to hold the ring locked. There are 6 notches on the sheave for deflection adjustment.
If still not sure what you have, then remove the secondary and measure across the diameter of the helix, it should be 4.25" (108mm) inches diameter

2009~2010~2011
800 summit
(kit c/w 175/360 primary spring, 3800 engage, 14g~20g pin kit, QR helix - use stock secondary spring)

To be announced
600/1200 summit


2008
Summit 600
kit c/w 160/350 primary spring, 3800 engage, 14g~20g pin kit, S8R4 helix - use stock secondary spring

Summit 800
kit c/w 160/350 primary spring, 3800 engage, 14g~20g pin kit, QR11 helix - use stock secondary spring

2007 (X model = roller helix)
Summit 600
Summit 800
kit c/w 160/350 primary spring, 3800 engage, 14g~20g pin kit, S8R4 helix - use stock secondary spring

Summit 1000
kit c/w 200/320 primary spring, S8R7 helix - use stock secondary spring

2006
(X model = roller helix)
Summit 600
kit c/w 160/350 primary spring, 14g~20g pin kit, 225/300 secondary spring, S8R4 roler helix OR SMT button helix

Summit 800
kit c/w 160/350 primary spring, 14g~20g pin kit, SMT buton helix OR S8R4 roller helix

Summit 1000
kit c/w 200/320 primary spring, S8R7 helix - use stock secondary spring


2005
Summit 600
kit c/w 160/350 primary spring, 14g~20g pin kit, 225/300 secondary spring, SMT helix

Summit 800
kit c/w 160/350 primary spring, 14g~20g pin kit, SMT helix

Summit 1000
kit c/w 200/320 primary spring, SMT helix - use stock secondary spring

2004
Summit 600
kit c/w 160/350 primary spring, 14g~20g pin kit, 225/350 secondary spring, SMT helix

Summit 800
kit c/w 160/350 primary spring, 3800 engage, 14g~20g pin kit, SMT helix - use stock secondary spring

2003
Summit 600 HO / ADR
Summit 700 ADR / X
Summit 800 HO / ADR / X
kit c/w 160/350 primary spring, 14g~20g pin kit, 3800 engage, 225/300 secondary spring, SMT helix

2002
These models come stock with the BRP purple secondary spring BRP#414978300
Summit 600 R (sport)
Summit 700 R (sport)
Summit 800 sport/x/hm/hmx
Summit 800 R/sport/x/hm/hmx
Summit 600 R/sport (Europe)
Summit 800 R/X (Europe)
(kit c/w 160/350 primary spring, 3800 engage, 14g~20g pin kit, SMT helix - use stock secondary spring)