NOPI Drag Race Association
NDRA Classes & Rules
2026 Championship Series — official competition guidelines. Find your class to review specs, purses, and the complete rules before race day.
2026 Championship Series
Purses & Points
2026 NDRA Championship Series payouts and points structure. Must attend all 3 events to qualify for the Championship.
★ Championship Requirement: Competitors must attend all three events to qualify to win the NDRA Championship title and contingency awards.
⚠ Purse Contingency Notice: All listed purse amounts are based on a full car field. Full fields are defined as 32 cars for XFWD and 16 cars for all other classes (XWORLD, XAWD vs XRWD, and all Index classes). Payouts will be adjusted proportionally if a full field is not reached.
Class Purses — X-Classes
*Based on full 32-car field (XFWD) / 16-car field (all others)
XFWD
*32-car field
Winner
$17,000
Runner-Up
$3,000
XWORLD
*16-car field
Winner
$8,000
Runner-Up
$2,000
XAWD vs XRWD
*16-car field
Winner
$8,000
Runner-Up
$2,000
Class Purses — Index Classes
*Based on full 16-car field
8.50 Index
*16-car field
Winner
$2,000
Runner-Up
$500
9.50 Index
*16-car field
Winner
$4,000
Runner-Up
$1,000
10.50 Index
*16-car field
Winner
$4,000
Runner-Up
$1,000
11.50 Index
*16-car field
Winner
$4,000
Runner-Up
$1,000
Points Breakdown — Championship Series
Round & Finishing Points
Winner
100 pts
Runner-Up
80 pts
Semifinalists
60 pts
Quarterfinalists
40 pts
First Round Win — 16 car field
20 pts
First Round Win — 32 car field
10 pts
Class Record (must be backed up within 1%)
20 pts
Qualifying Points — 16 Car Field
No. 1 Qualifier
8 pts
No. 2 Qualifier
7 pts
No. 3 Qualifier
6 pts
No. 4 Qualifier
5 pts
No. 5–6 Qualifiers
4 pts
No. 7–8 Qualifiers
3 pts
No. 9–12 Qualifiers
2 pts
No. 13–16 Qualifiers
1 pt
⚠ Championship Eligibility: Competitors must attend all three NDRA events to qualify to win the Championship. Points are accumulated across all three events and the top finishing drivers receive awards, payouts, and contingencies.
Heads-Up Index Racing
Index Classes
Quarter-mile heads-up racing on a .400 Pro Tree. Catch-pan / diaper required for all index vehicles. Select your index below.
8.50 Index
Distance
1/4 Mile
Tree
.400 Pro (All Classes)
Breakout
8.50
Field
All Run
Winner
$2,000
Runner-Up
$500
★ Growing Field Bonus: Purse amounts above are based on a 16-car field. If more than 16 cars enter the 8.50 Index field, the winnings purse will increase accordingly.
General Safety
Must meet NHRA & track safety rules.
Body
Full-bodied, street-appearing vehicles
Tree
.400 Pro Tree for all classes
Field
All run field
Electronics
Throttle stops and starting line enhancers prohibited. Delay boxes allowed.
Chassis
Tube chassis cars allowed. Back-halved cars allowed. Aftermarket “bolt-on” front ends allowed.
Tires
Any tire size permitted — radial prepped
Wheelie Bars
Allowed
Exhaust
No mufflers required
Buy Backs
No buy backs
9.50 Index
Distance
1/4 Mile
Tree
.400 Pro
Breakout
9.50
Catch-Pan
Required
Winner
$4,000
Runner-Up
$1,000
General Safety
All vehicles must comply with NHRA safety rules.
Body
Any year vehicle permitted
Chassis
Any door car. Must have door — no dragsters or altereds
Engine
No restrictions
Exhaust
Not required
Power Adder
No restrictions
Suspension
No restrictions
Lights
Not required
Windows
OEM glass or Lexan permitted
Interior
Not required
Electronics
Delay boxes, electronic throttle stops, and stutter boxes are PROHIBITED
Shifter
Any
Fuel
Any
Tires
No restrictions
Catch-Pan
Catch-pan / diaper required
10.50 Index
Distance
1/4 Mile
Tree
.400 Pro
Breakout
10.50
Catch-Pan
Required
Winner
$4,000
Runner-Up
$1,000
General Safety
All vehicles must comply with NHRA safety rules.
Body
Any year vehicle permitted
Chassis
Any door car. Must have door — no dragsters or altereds
Engine
No restrictions
Exhaust
Not required
Power Adder
No restrictions
Suspension
No restrictions
Lights
Not required
Windows
OEM glass or Lexan permitted
Interior
Not required
Electronics
Delay boxes, electronic throttle stops, and stutter boxes are PROHIBITED
Shifter
Any
Fuel
Any
Tires
No restrictions
Catch-Pan
Catch-pan / diaper required
11.50 Index
Distance
1/4 Mile
Tree
.400 Pro
Breakout
11.50
Catch-Pan
Required
Winner
$4,000
Runner-Up
$1,000
General Safety
All vehicles must comply with NHRA safety rules.
Body
Any year vehicle permitted
Chassis
Any door car. Must have door — no dragsters or altereds
Engine
No restrictions
Exhaust
Not required
Power Adder
No restrictions
Suspension
No restrictions
Lights
Not required
Windows
OEM glass or Lexan permitted
Interior
Not required
Electronics
Delay boxes, electronic throttle stops, and stutter boxes are PROHIBITED
Shifter
Any
Fuel
Any
Tires
No restrictions
Catch-Pan
Catch-pan / diaper required
Open Door Car Class
Pro Dial
All eligible vehicles compete together in a single class.
Distance
1/4 Mile
Tree
.500 Pro
Electronics
Unrestricted
Winner
$2,000
Pro Dial Rules
Chassis
Any door car permitted
Engine
No restrictions
Power Adder
No restrictions
Suspension
No restrictions
Electronics
No restrictions
Lights
Not required
Windows
Glass or Lexan
Interior
Not required
Shifter
Any
Fuel
Any
Tires
No restrictions
⚠ Once a vehicle stages, the pass is final. No reruns. No reinstatement. No exceptions. Guaranteed purses paid as advertised; payouts distributed by actual finishing positions only.
Re-Entry Regulations
≤ 75 Cars
First- or second-round re-entry permitted
> 75 Cars
First-round re-entry only
Placement
Directly into the next competition round with all remaining winners
Separate Round
No separate re-entry round will be conducted
Lane Choice & Bye Run Procedures
Rounds 1–8
Lane choice by first vehicle properly positioned in the lanes
QF – Finals
Lane choice by coin flip (event staff present)
Bye Runs
Awarded based on best winning package from previous round. Competitor may decline and remain eligible. Bye runner pulled from lanes and runs last. Full pass not required — may stage and back out.
Safety & Technical Compliance
All vehicles must meet chassis certification requirements, hold a current competition license, and be equipped with all safety equipment required for the vehicle’s dial-in. Compliance is mandatory at all times.
X-Class · Front-Wheel Drive
XFWD
Front-wheel drive X-Class. Air intercoolers only. FWD-origin 4-cylinder vehicles must have engine mounted in the transverse position.
Drive
FWD Only
Max Tire
25.0″ × 9.5″
Fuel SG Max
0.799
Intercooler
Air Only
Winner
$17,000
Runner-Up
$3,000
Turbo & Weight Breaks
Engine
Driveline
Max Turbo (Ind / Exd)
Nitrous
Min Weight
4–6 cyl
FWD
Ind 64.9 / Exd 88.9 — Single, extended OK
OK
2,250 lbs
4–6 cyl
FWD
Ind 67.9 / Exd 102.9 — Single, extended OK
OK
2,350 lbs
4–6 cyl
FWD
Ind 73.9 / Exd 102.9 — Single, extended OK
OK
2,400 lbs
* Nitrous +100 lbs added to minimum weight
Full XFWD Rules
Chassis
Complete stock chassis, floorboard, firewall & frame rails retained. Frame rails may be modified ahead of strut tower. Notching permitted. Aftermarket K-members OK. Spare tire well may be removed and covered with sheet metal.
Ground Clear.
Min 3″ from front of vehicle to 12″ behind front spindle; min 2″ for remainder (except oil pan and exhaust headers). Catch pan must not interfere with timing equipment.
Wheelbase
Within 3″ of factory specification
Suspension (F)
Upper strut mount stays at factory location. Adjustable caster/camber pillow-ball mounts OK. Lower arm may be strengthened (factory mount points maintained). Sway bars, limit straps, tower braces OK. Traction devices bolt-on only.
Suspension (R)
Aftermarket lower control arms, braces, tie bars, sway bars, limit straps OK. Min 1″ shock travel maintained. At least one working shock per wheel required. Bolt-on only; OEM mount points used.
Lights
Headlights & brake lights required. One headlight may be removed for induction.
Windows
OEM glass or Lexan permitted. If Lexan used: steel frame around window or window latch required.
Shifter
Air shifters prohibited. Each shift must be manual. Sequential transmissions OK. Trans-brake OK.
Fuel
Specific gravity max .799 (digital tester, 1% variance allowed). Drain valve required on return side of fuel rail or regulator.
Turbocharger
Must be commercially available “as sold.” No reducers, compressor milling, or cover modifications. Map groove max .250″ maintained around full circumference.
Nitrous
Any nitrous equipment incurs +100 lb penalty. If claiming turbo-only entry, all nitrous items must be removed.
Intercooler
Air intercoolers only. Water/methanol injection permitted.
Tires
Max 25.0″ × 9.5″ slick or DOT bias ply (sidewall designation checked)
Tow Vehicles
Permitted. Vehicle must reach scales under its own power. If disabled: crew notifies tech; official escorts retrieval.
Credentials
Competition + membership number required. NHRA comp license for 9.99 or quicker. 10.00+: valid government ID (beyond learner’s permit) or NHRA license. See NHRA Gen. Regs 10:4.
Engine Containment: Engine diaper or catch pan device mandatory. Minimum 2″ lips on all sides, coved/curved inward. Must cover entire area below engine/transmission. Excessive oil spill on track may result in disqualification at event director’s sole discretion.
X-Class · All-Wheel Drive
XAWD
All-wheel drive X-Class. Largest tire allowance in the X-Class lineup. Intercooling unrestricted. Chassis, suspension, and fuel rules same as XFWD.
Drive
AWD
Max Tire (AWD)
28.0″ × 11.5″
Max Tire (FWD)
25.0″ × 9.5″
Fuel SG Max
0.799
Intercooler
Unrestricted
Winner (vs XRWD)
$8,000
Runner-Up
$2,000
Turbo & Weight Breaks
Engine
Driveline
Max Turbo (Inducer)
Nitrous
Min Weight
4 cylinder
AWD
Ind 73.9 / Exd 102.9 — Single, extended OK
OK
2,300 lbs
4 cylinder
AWD
Ind 76.9
OK
2,400 lbs
4 cylinder
AWD
Ind 80.9
OK
2,500 lbs
4 cylinder
AWD
Ind 83.9
OK
2,600 lbs
6 cylinder
AWD
Ind 76.9
OK
2,600 lbs
6 cylinder
AWD
Ind 80.9
OK
2,700 lbs
Full XAWD Rules
Chassis
Must retain complete stock chassis, floorboard, firewall, and frame rails. Frame rails may be modified in front of strut tower. Notching permitted. Aftermarket K-members permitted. Spare tire wheel well may be removed and covered with sheet metal.
Ground Clear.
Min 3″ from front of vehicle to 12″ behind front spindle centerline; min 2″ for remainder (except oil pan and exhaust headers). Catch pan/diaper must not interfere with timing equipment.
Wheelbase
Must be within 3″ of factory wheelbase.
Suspension (F)
Upper strut mount must remain at factory location. Adjustable caster/camber pillow-ball mounts permitted. Lower control arm may be strengthened (factory chassis mount points maintained). Strut tower braces, lower tie bars, sway bars, limit straps permitted. Traction devices bolt-on only.
Suspension (R)
Aftermarket lower control arms, braces, tie bars, sway bars, limit straps permitted. Min 1″ shock travel maintained. At least one working shock per wheel required. Bolt-on only; OEM mounts used.
Lights
Headlights and brake lights required. One headlight may be removed for induction.
Windows
OEM glass or Lexan permitted. If aftermarket doors or Lexan windows used: steel frame around window or window latch required.
Driveline
Aftermarket axles, ring & pinions, final drive, spools, and differentials permitted.
Transmission
Manual or auto permitted. Aftermarket bell housings permitted. Air shifters prohibited. Trans-brakes permitted. Each shift must be manual (driver pulls lever). Sequential transmissions permitted.
Clutch
Must be manually operated by driver’s foot. Any style permitted.
Fuel
Specific gravity max .799 (digital tester, 1% variance). Drain valve required on return side of fuel rail or regulator.
Engine
OEM or aftermarket blocks permitted. 4-cyl vehicles that came OEM as FWD or AWD must have engine in transverse location.
Turbocharger
Must be commercially available “as sold.” No reducers, compressor milling, or cover modifications. Inducer measured at leading edge (capture .200 of blade tip). Exducer max 2mm larger than backplate. Map groove max .250″ maintained around full circumference.
Nitrous
Any nitrous equipment incurs weight penalty. If claiming turbo-only entry, all nitrous items must be removed.
Intercooler
No restrictions.
Tires (AWD)
Max 28.0″ × 11.5″ slick or DOT bias ply.
Tires (FWD)
Max 25.0″ × 9.5″ slick or DOT bias ply.
Tow Vehicles
Permitted. Vehicle must reach scales under its own power. If disabled: crew notifies tech; official escorts retrieval.
Credentials
Competition + membership number required. NHRA comp license for 9.99 or quicker. 10.00+: valid government ID (beyond learner’s permit) or NHRA license. See NHRA Gen. Regs 10:4.
Engine Containment: Engine diaper or catch pan device mandatory. Min 2″ lips on all sides, coved/curved inward. Must cover entire area below engine/transmission. Where exhaust header passes directly under oil pan, a 2-piece diaper may be used. Vehicles using OEM manual transmission cases must also have a device for the transmission. Excessive oil spill on track may result in disqualification at event director’s sole discretion.
X-Class · Rear-Wheel Drive
XRWD
Rear-wheel drive X-Class. Mini tubs allowed. Wheelie bars prohibited. Radial tires limited to 275/60/15. Competes vs XAWD for purse.
Drive
RWD
Max Slick
28.0″ × 11.5″
Max Radial
275/60/15
Mini Tubs
Allowed
Wheelie Bars
Prohibited
Winner (vs XAWD)
$8,000
Runner-Up
$2,000
Turbo & Weight Breaks
Engine
Driveline
Max Turbo (Inducer)
Nitrous
Min Weight
4 cylinder
RWD – Manual
Ind 73.9 / Exd 102.9 — Single, extended OK
OK (+100 lbs)
2,600 lbs
4 cylinder
RWD – Auto
Ind 62.9 / Exd 112.9 — Single, extended OK
OK (+100 lbs)
2,750 lbs
6 cylinder
RWD – Manual
Ind 88.9 — Single
OK (+100 lbs)
2,850 lbs
6 cylinder
RWD – Auto
Ind 67.9
OK (+100 lbs)
2,850 lbs
6 cylinder
RWD – Auto
Ind 73.9
OK (+100 lbs)
3,050 lbs
6 cylinder
RWD – Auto
Ind 76.9
OK (+100 lbs)
3,250 lbs
* 3.2L and larger strokers +100 lbs | Max nitrous jets .035
Full XRWD Rules
Chassis
Must retain complete stock chassis, floorboard, firewall, and frame rails. Frame rails may be modified in front of strut tower. Notching permitted. Aftermarket K-members permitted. Spare tire wheel well may be removed and covered with sheet metal. Mini tubs allowed.
Ground Clear.
Min 3″ from front of vehicle to 12″ behind front spindle centerline; min 2″ for remainder (except oil pan and exhaust headers). Catch pan/diaper must not interfere with timing equipment.
Suspension
Must utilize stock front and rear suspension mounts (direct bolt-in factory location). Wheelie bars prohibited.
Lights
Headlights and brake lights required. One headlight may be removed for induction.
Windows
OEM glass or Lexan permitted. If aftermarket doors or Lexan windows used: steel frame around window or window latch required.
Driveline
Aftermarket axles, ring & pinions, final drive, spools, and differentials permitted.
Transmission
Any style automatic permitted; trans-brakes permitted. Stock-style clutch-assisted manuals with H-pattern permitted. Automated/pneumatic/electronic shifting mechanisms prohibited — each shift must be manual. Sequential transmissions permitted.
Clutch
Must be manually operated by driver’s foot. Any style permitted.
Fuel
Specific gravity max .799 (digital tester, 1% variance). Drain valve required on return side of fuel rail or regulator.
Engine
OEM or aftermarket blocks permitted. 4-cyl vehicles that came OEM as FWD or AWD must have engine in transverse location.
Turbocharger
Must be commercially available “as sold.” No reducers, compressor milling, or cover modifications. Inducer measured at leading edge (capture .200 of blade tip). Exducer max 2mm larger than backplate. Map groove max .250″ maintained around full circumference.
Nitrous
Any nitrous equipment incurs +100 lb weight penalty. If claiming turbo-only entry, all nitrous items must be removed.
Intercooler
No restrictions.
Tires
Maximum slick: 28.0″ × 11.5″. Radial tires limited to 275/60/15.
Tow Vehicles
Permitted. Vehicle must reach scales under its own power. If disabled: crew notifies tech; official escorts retrieval.
Credentials
Competition + membership number required. NHRA comp license for 9.99 or quicker. 10.00+: valid government ID (beyond learner’s permit) or NHRA license. See NHRA Gen. Regs 10:4.
Engine Containment: Engine diaper or catch pan device mandatory. Min 2″ lips on all sides, coved/curved inward. Must cover entire area below engine/transmission. Excessive oil spill on track may result in disqualification at event director’s sole discretion.
X-Class · FWD / AWD
XWORLD
Open to FWD and AWD. No nitrous permitted for FWD entries. Air intercoolers only. Widest turbo/weight configuration matrix in the X-Class lineup.
Drive
FWD / AWD
Intercooler
Air Only
FWD Nitrous
Not Permitted
AWD Nitrous
OK (+100 lbs)
Winner
$8,000
Runner-Up
$2,000
Turbo & Weight Breaks
Engine
Drive
Max Turbo Configuration
Nitrous
Min Wt.
4 cyl
FWD
Ind 63.9 / Exd 88.9 / Turbo 66.9 (GXR +125, Apex +150)
No
2,300
4 cyl
FWD
Ind 64.9 / Exd 88.9 / Turbo 69.9 (Apex +100)
No
2,450
4 cyl
FWD
PTE Gen 1 — Comp 67.9 / Turbo 66.9
No
2,400
4 cyl
FWD
PTE Gen 2 — Comp 67.9 / Turbo 69.9
No
2,450
4 cyl
FWD
PTE Next Gen — Comp 67.9 / Turbo 69.9
No
2,500
5–6 cyl
FWD
Ind 73.9 / Exd 102.9 (extended OK)
No
2,500
VW VR6
FWD
Ind 73.9 / Exd 102.9 (extended OK)
No
2,400
4 cyl
FWD
NITRO AM
No
1,700
6 cyl
FWD
NITRO AM
No
1,850
4 cyl
AWD
Ind 64.9–68.9 / Exd 102.9 (extended OK)
OK (+100)
2,700
4 cyl
AWD
Ind 73.9 / Exd 102.9 (extended OK)
OK (+100)
2,900
4 cyl Mazda
FWD
Ind 73.9 / Exd 102.9 (extended OK)
No
2,500
* Automatic cars without trans-brake −100 lbs | 4-cyl AWD manual +50 lbs | 4-cyl non-VTEC B Series −50 lbs
Full XWORLD Rules
Chassis
Must retain complete stock chassis, floorboard, firewall, and frame rails. Frame rails may be modified in front of strut tower. Notching permitted. Aftermarket K-members permitted. Spare tire wheel well may be removed and covered with sheet metal.
Ground Clear.
Min 3″ from front of vehicle to 12″ behind front spindle centerline; min 2″ for remainder (except oil pan and exhaust headers). Catch pan/diaper must not interfere with timing equipment.
Wheelbase
Must be within 3″ of factory wheelbase.
Suspension (F)
Upper strut mount must remain at factory location. Adjustable caster/camber pillow-ball mounts permitted. Lower control arm may be strengthened (factory mount points maintained). Strut tower braces, lower tie bars, sway bars, limit straps permitted. Traction devices bolt-on only.
Suspension (R)
Aftermarket lower control arms, braces, tie bars, sway bars, limit straps permitted. Min 1″ shock travel maintained. At least one working shock per wheel required. Bolt-on only; OEM mounts used.
Lights
Headlights and brake lights required. One headlight may be removed for induction.
Windows
OEM glass or Lexan permitted. If aftermarket doors or Lexan windows used: steel frame around window or window latch required.
Driveline
Aftermarket axles, ring & pinions, final drive, spools, and differentials permitted.
Transmission
Manual or auto permitted. Aftermarket bell housings permitted. Air shifters prohibited. Trans-brakes permitted. Each shift must be manual (driver pulls lever). Sequential transmissions permitted.
Clutch
Must be manually operated by driver’s foot. Any style permitted.
Fuel
Specific gravity max .799 (digital tester, 1% variance). Drain valve required on return side of fuel rail or regulator.
Engine
OEM or aftermarket blocks permitted. 4-cyl vehicles that came OEM as FWD or AWD must have engine in transverse location.
Turbocharger
Must be commercially available “as sold.” No reducers, compressor milling, or cover modifications. Inducer measured at leading edge (capture .200 of blade tip). Exducer max 2mm larger than backplate. Map groove max .250″ maintained around full circumference.
Nitrous
Any nitrous equipment incurs weight penalty. If claiming turbo-only entry, all nitrous items must be removed. FWD entries: nitrous not permitted.
Intercooler
Air intercoolers only. Water/methanol injection permitted.
Tires (AWD)
Max 28.0″ × 11.5″ slick or DOT bias ply.
Tires (FWD)
Max 25.0″ × 9.5″ slick or DOT bias ply.
Tow Vehicles
Permitted. Vehicle must reach scales under its own power. If disabled: crew notifies tech; official escorts retrieval.
Credentials
Competition + membership number required. NHRA comp license for 9.99 or quicker. 10.00+: valid government ID (beyond learner’s permit) or NHRA license. See NHRA Gen. Regs 10:4.
Engine Containment: Engine diaper or catch pan device mandatory. Min 2″ lips on all sides, coved/curved inward. Must cover entire area below engine/transmission. Excessive oil spill on track may result in disqualification at event director’s sole discretion.
Questions About Your Class?
Contact the NOPI team before race weekend and we'll help confirm your class, setup, and paperwork.