SIDRA_Number_cheat_sheet
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2017 SIDRA Numbering Scheme
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Division NameDivision LetterClass LetterBackground/ # Letter ColorExample Numbers as on Bike
(front and both sides)
Division Requirements
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START on A WAVE
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AA (pro)AAARed w White
1aa, 2aa, 3aa, .... 100aa
Unlimited cc. (Cash purse, self funded 50% paypack)
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UNLIMITED AXABlack w White1X, 2X, 3X, .... 100X125cc or larger, minimum of 14yrs Old
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LIGHTWEIGHT AAABlack w White1A, 2A, 3A, ..., 100A250cc or smaller, any stroke
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VET AVABlack w White1V, 2V, 3V, ..., 100V30+ yrs old, unlimited cc
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SENIOR ASABlack w White1S, 2S, 3S, ..., 100S40+ yrs old, unlimited cc
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MASTERS AMABlack w White1M, 2M, 3M, ...,100M50+ yrs old, unlimited cc
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WOMENSWABlack w White1W, 2W, 3W, ...,100WBe of the fairer gender, unlimited cc
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START on B WAVE
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UNLIMITED BUBWhite w Black1U, 2U, 3U, .... 100U125cc or larger, minimum of 14yr Old
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LIGHTWEIGHT BYBWhite w Black1Y, 2Y, 3Y, ..., 100Y250cc or smaller, any stroke
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VET BTBWhite w Black1T, 2T, 3T, ..., 100T30+ yrs old, unlimited cc
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SENIOR BFBWhite w Black1F, 2F, 3F, ..., 100F40+ yrs old, unlimited cc
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MASTERS BEBWhite w Black1E, 2E, 3E, ..., 100E50+ yrs old, unlimited cc
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LEGENDS (60+)RNoneN/A1R, 2R, 3R, ..., 100R60+ yrs old, unlimited cc, heads up (50% to finish)
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WOMENSLBWhite w Black1L, 2L, 3L, ..., 100LBe of the fairer gender, unlimited cc (50% to finish)
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BOMBERBNoneN/A1B, 2B, 3B, ..., 100BUnlimited cc, heads up
10 years old or older bikes
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START on C WAVE
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C CLASSCNoneWhite w Black1C, 2C, 3C, ..., 100CBeginner division, heads up
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SportsmanZNoneWhite w Black10Z, 11Z, 12Z, ..., 100ZHeads up runs shortened course at reduced fee. Points tracked but no Trophies or year end awards.
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MINI ADNoneWhite w Black1D, 2D, 3D, ..., 100D
up to 112cc 2 stroke or 150cc 4 stroke, maximum of 15yrs old at start of season
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MINI BPNoneWhite w Black1P, 2P, 3P, ..., 100P
up to 112cc 2 stroke or 150cc 4 stroke, maximum of 15yrs old at start of season
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MINI GIRLGNoneWhite w Black1G, 2G, 3G, ..., 100G
up to 112cc 2 stroke or 150cc 4 stroke, maximum of 15yrs old at start of season
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Mini 65KNoneWhite w Black1K, 2K, 3K, ...., 100KMini Bikes eligible for the 65cc class need to meet these requirements (max):
Displacement: 65cc (110cc four stroke)
Front Tire: 14", Rear Tire: 12", Wheelbase: 45.0", Seat Height: 30.0"
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Available Letters: E, H, I, J, N, O, Q, if possible don't use N as it is used to indicate a national number during AMA events.
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Notes:
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14 is the minimum age for all big bike classes. 12-14 year olds can be granted an exception by SIDRA and promoting club
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Class determines rider skill, A (fastest), B, C (beginner)
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Division determines whether you are unlimited, veteran, senior, etc.
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2017 # & Letter Format
2014 # & Letter Format
2011-2013 # & Letter Format
2010 and prior # & Letter
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