Racer Info
How To Register
Minor Release
A Minor Waiver Release is required for all underage riders. Minors don't need to accompany parents to Rider Registration, but parents must complete the waiver in advance.
AMA Membership
AMA Membership is required to race any Tristar MX event. Sign up or renew your AMA membership here.
Transponders
Transponders are required for all competitors. Available for $30 rental with a $100 deposit (refunded upon return), in pre-registration or at the event. They sell out fast, so secure one when you pre-register. You can also bring your own; check it in at registration.
Registration
Pre-Registration includes waiver release signing, race entry payment, and transponder rental. Pre-register online here.
On-Site Registration includes waiver release signing, race entry payment, transponder receipt (if rented), and mechanic wristband distribution. Bring your own transponder to on-site registration check-in.
Racer Schedule & Format
Pro and Amateur timelines, the same at every round. Times are subject to change; check with registration on site.
Race Format
Classes & Eligibility
Night show classes run both Friday and Saturday nights at every stop. The full amateur program runs during the Saturday day show.
450cc or 250cc motorcycles — Pro and A racers.
250cc motorcycles — Pro, A and B racers. B racers are not eligible for purse money.
Night Show Classes
Saturday Amateur Racing
- Stacyc 12/16
- Stacyc 18/20
- 50 Shaft Limited (4–6)
- 50 Beginner (4–8)
- 50 Open (4–8)
- 50 JR Limited (4–6)
- 50 SR Limited (7–8)
- Micro-E Limited (4–8)
- 65 JR (7–9)
- 65 SR (10–11)
- 65 Open (7–11)
- 85 JR (9–11)
- 85 SR (12–15)
- 85 Open (10–14)
- Supermini 1 (12–15)
- Supermini 2 (14–16)
- Girls (9–13)
- Schoolboy 1 (12–17)
- Schoolboy 2 (12–17)
- WMX
- A/B All-Stars
- Open 2-Stroke
- College Boy (18–24)
- 25+
- 30+
- 40+
- 50+
- Warrior
- Open Beginner
- 250 C
- 250 B
- Open B
- Open C
- Open E-Moto
Class list subject to change. Refer to the official rulebook for eligibility and machine requirements.
Fees, Registration & Credentials
Series credentials are available for each region and for the entire series. Racers competing for a regional championship will save money by purchasing credentials.
Both registration and credentials are handled through Tristar MX Online Race Registration.
Plate Artwork
Official series front number plate artwork for the 2026–27 season, in both the black and white plate versions. Every night show bike must run the series front plate header.
| Class | Background | Numbers |
|---|---|---|
| Open Pro Class | White | Black |
| 250 Pro Class | Black | White |
| Schoolboy 2 | Black | White |
| 85 All-Stars | White | Black |
| 65 All-Stars | White | Black |
Racers competing in both classes on the same bike have to change plate backgrounds to meet each class requirement.
Bike Transport
AMA Partzilla Arenacross offers limited opportunities for racer/team logistics, including road cases and transportation for motorcycles and gear.
Each case holds two motorcycles. Spaces are limited — reach out to Shawn Smith as soon as possible to verify availability.
Reserve Transport
Or email shawn@tristarmx.com directly.
Series Schedule
Fourteen stops, 28 rounds, capped by the Partzilla Playoffs at Lincoln Trail. Dates and venues are subject to change.
May 21–23 · Casey, IL · Lincoln Trail
The AMA National Championship Playoffs — the largest single-round purse in Arenacross history.
East & West Regional Championships
The AMA Partzilla National Arenacross Championship features two separate regional series: East and West. Riders may compete in either regional series or in both.
Each region crowns its own Regional Champion, with the top riders from each region advancing to the National Championship Playoffs to compete for the AMA Partzilla National Championship.
Playoff Details
The AMA Partzilla National Championship Playoffs bring together the top Arenacross riders in the country to compete for the AMA National Championship and a $50,000 purse.
The event is held at Lincoln Trail during the break between the Supercross and Pro Motocross seasons, on a special Sonny Leonti-designed Arenacross-style track featuring one hybrid section.
The top 7 riders from both the East and West Regional Championships automatically qualify for the 32-rider championship field. These riders receive bonus championship points based on their final Regional Championship standings — the same scale in both regions.
| Regional Finish | Bonus Points |
|---|---|
| 1st | 7 |
| 2nd | 6 |
| 3rd | 5 |
| 4th | 4 |
| 5th | 3 |
| 6th | 2 |
| 7th | 1 |
Should a racer qualify in both regions, they will only be seeded at the best result of both regions. However, they will receive Championship points from both regions to start the Playoffs.
Example: a racer places 5th in the East Region and 7th in the West Region. That racer advances to the Playoffs in the 5th seeded spot, and an additional qualifying spot opens for a non-seeded rider.
Riders who do not qualify through the Regional Championships may participate in a qualifying session at the event. The fastest 18 qualifiers earn the remaining positions in the 32-rider National Championship field.
Championship Format
The Playoffs run over two days. Day 1 scores standard series points, Day 2 scores double. Both combine with the bonus points you carry in from your Regional Championship finish.
Purse & Payout
Paid per night, both nights of every stop.
| Pos | Payout |
|---|---|
| 1st | $2,500 |
| 2nd | $1,750 |
| 3rd | $1,250 |
| 4th | $850 |
| 5th | $700 |
| 6th | $500 |
| 7th | $400 |
| 8th | $300 |
| 9th | $200 |
| 10th | $200 |
| Pos | Payout |
|---|---|
| 1st | $500 |
| 2nd | $400 |
| 3rd | $300 |
| 4th | $200 |
| 5th | $100 |
B racers are not eligible for purse money in the Arenacross 250 class.
National Championship Playoff Payout
New for 2026-2027. Racers qualify across the regional season for the 32-rider field at Lincoln Trail, where a $50,000 purse is paid 16 deep — on top of the per-night purse earned during the season.
| Pos | Payout |
|---|---|
| 1st | $18,000 |
| 2nd | $10,000 |
| 3rd | $5,000 |
| 4th | $3,500 |
| 5th | $2,500 |
| 6th | $1,950 |
| 7th | $1,600 |
| 8th | $1,300 |
| 9th | $1,100 |
| 10th | $1,000 |
| Pos | Payout |
|---|---|
| 11th | $900 |
| 12th | $800 |
| 13th | $700 |
| 14th | $625 |
| 15th | $525 |
| 16th | $500 |
Partzilla Progressive Championship Bonus
The first of its kind in Arenacross: a true revenue-sharing championship reward for the Open Pro Class. It starts with a guaranteed $10,000 championship bonus, and the pot grows at every round as a percentage of event ticket sales is added to it.
A percentage of all ticket sales at every round feeds directly into the championship bonus pool. The final payout is set by total ticket revenue across the season. The more fans that pack the arena, the bigger the prize.
Manufacturer Contingency
Manufacturer contingency is paid on top of the series purse. See every brand that has posted, how much, and where to register so you are eligible before you race.
Team Presentation & Pre-Registration
The AMA Partzilla National Arenacross Championship is an AMA National Championship series televised on FS1 and FS2, and presented as a professional entertainment experience for fans nationwide. Teams and riders are expected to represent themselves, their sponsors and the series with a professional appearance and presentation.
Teams must maintain a clean, organized pit area, properly presented motorcycles, and professional team attire — including coordinated team shirts or other appropriate team apparel.
Pre-registered teams have the opportunity to participate in pre-season media production, including TV segments, TV bumpers, promotional features and marketing content. Participation is required and provides an excellent opportunity to showcase teams, riders and sponsors throughout the season.
Questions?
Email info@tristarmx.com and the series team will get back to you.
All information subject to change. Refer to the official rulebook for complete competition regulations.