

Mighty Minis Racing
Affordable mini racing for all
Under new ownership for 2026
Technical Regulations for the
2025 season
Technical Specification Overview:
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Engine: ​
Rover A+ 1275cc cylinder block, bored out +20 thou to 1293cc.
Cylinder head:
Rover SPI (12G940B) or MPI (LDF105800)
Camshaft:
AC Dodd ACD-TSR or Mini spares LGC10230
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Gearbox: ​
Rover DAM 5626 Casing
A+ helical gear set or Straight Cut clubman Gearset
4 pin cross pin differential with 3.6 final drive
1:1 straight cut drop gears
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Suspension:
Rose Jointed lower arms & tie rod arms
Standard Rubber cones
Standard Top arms
Standard hubs, driveshafts, 8.4 inch discs and calipers
Hi lo adjustable suspension
Rear anti-roll bar​​​
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Body:
Classic minis manufactured from 1976-2000
Standard body form, no flip fronts or modifications
Sound construction, no corrosion
Fibreglass boot and bonnets are allowed
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To view the specification in more detail please download the regulations: here
2026 Technical Regulations coming soon