Description of the article « Straight-cut MA gear set – close-ratio synchro (Peugeot/Citroën Sport Group N) »

Improve acceleration and shifting precision with our straight-cut MA gear set featuring a close-ratio synchro setup for Peugeot–Citroën MA 5-speed gearboxes. Compatible with AX / C2 / 106 / 205 Rallye / 206 models equipped with an MA transmission.

Designed for demanding use, this straight-cut MA gear kit was FIA Group N homologated by Peugeot/Citroën Sport. Straight-cut gears deliver high mechanical efficiency and a more direct response while keeping synchros (synchro system for smooth gear engagement).

Gear ratios

1st – (41/12) 3.417
2nd – (33/14) 2.357
3rd – (36/20) 1.800
4th – (44/30) 1.467
5th – (41/34) 1.206

Materials & treatments

Material: high-strength Ni-Cr-Mo (nickel–chromium–molybdenum) alloy steel, billet-machined and forged.
Surface treatments: gear grinding, sandblasting, shot peening, Parkerizing.
Heat treatments: carburizing + cryogenic processing.
Hardness: HRC 56 to 60.

Clutch compatibility (splines)

OE input shaft spline retained for the clutch disc: 18 teeth x Ø 21 mm.

Key points

Ideal straight-cut MA gear set for an MA 5-speed gearbox with close-ratio synchro.
Gear engagement via synchros, while benefiting from the efficiency of straight-cut gears.
Close ratios help keep the engine in the optimal power band on stages/track.