In order of authority:
2008 Temporary Supplemental Rules

2008 Jim Russell International Karting Center Track Rules

2008 US RMC Rulebook
March 2008 MaxTech Article

2008 World Rotax Max Challenge Sporting Regulations
2008 World Rotax Max Challenge Technical Regulations
CIK Sporting Regulations
CIK Technical Regulations

2007 SRP Supplemental Rules
2007 Jim Russel Kart Series Fuel/Oil Ratios Technote

2008 NCRC Criteria for Invitation to US Nationals

USRMC Membership Application - Online
USRMC Membership Application - Download

US Rotax Max Challenge - US Series
Rotax Max Challenge - World Series
Marin Karting - Parts and Service
Infineon/Jim Russell Karting Open Testing Schedule

FR-125
Repair Manual (5MB)
Operators Manual (3MB)
Spare Parts List (5MB)

DD2
Repair Manual (5MB)
Operators Manual (3MB)
'06 Spare Parts List (4MB)
'05 Spare Parts List (4MB)
'03 Spare Parts List (3MB)

RM1
Operators Manual (8MB)
'06 Spare Parts List (2MB)
'03 Spare Parts List (1MB)
'02 Spare Parts List (1MB)

Mojo D2 tire information

To discuss the Northern California Rotax Challenge please visit the forums at NorCal Karters or eKartingNews.