4.50 - 14x63 / 5.25 - 12x63 Final Drive for Renault JR5 gearbox MR953403 You can find them at

You can find them at the following link:

designed for reliable performance in motorsport and high-load applications

increasing surface hardness to deliver ultimate strength and durability

846 - 13x76

Spline Count – Number of splines on the mainshaft (clutch disc hub): 23 teeth

4.50 - 14x63 / 5.25 - 12x63 Final Drive for Renault JR5 gearbox MR953403 You can find them atFinal Drive for Renault JR5 gearbox Applications: Renault JR5 gearbox (Twingo RS) Ratios : 4. 50 14 63 5. 250 12 63 Material: Billet and forged Ni CrMo steel. Hardness: HRC 56~60 Main surface treatment processes used: Sandblasting, shot peening and WPC. Main heat treatments used: Carburizing and Cryogenic.