{"product_id":"psa-ma-gearbox-final-drive-4-29-4-92-5-67-plate-type-lsd","title":"4.29\/4.92\/5.67 Final Drive for PSA MA gearbox for use with Plate type LSD only","description":"\u003ch2 dir=\"ltr\"\u003e\u003cspan\u003eBolt-on final drive in ratios 4.29\/4.92\/5.67  for MA gearboxes:\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"\" data-end=\"333\" data-start=\"83\"\u003e\u003cstrong data-end=\"333\" data-start=\"83\"\u003eThis semi-helical final drive is compatible with both early-type MA gearboxes (5th gear with threaded end closure) and late-type MA gearboxes (5th gear with circlip end closure). It is designed exclusively for use with our bolt-on Plate-type LSD.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"\" data-end=\"333\" data-start=\"83\"\u003e\u003cstrong data-end=\"333\" data-start=\"83\"\u003eRatios: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-end=\"333\" data-start=\"83\"\u003e4.29 - 14x60\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"333\" data-start=\"83\"\u003e4.92 - 13x64\u003c\/li\u003e\n\u003cli data-end=\"333\" data-start=\"83\"\u003e5.67 - 12x68 \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eShould be mounted only with the \u003ca href=\"https:\/\/www.rsxracingsolutions.com\/products\/psa_ma_gearbox_plate_type_lsd\" rel=\"noopener\" target=\"_blank\"\u003eRSX plate type LSD 210601341\u003c\/a\u003e\u003ca href=\"https:\/\/www.rsxracingsolutions.com\/products\/peugeot-citroen-ma-gearbox-plate-type-lsd?utm_source=copyToPasteBoard\u0026amp;utm_medium=product-links\u0026amp;utm_content=web\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eOur ultralight final drives to be screwed to our LSD for Peugeot-Citroen (PSA) MA boxes.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThis final drive is the most recommended in combination with the original ratio and for use in rally, mountain trials, slalom, autocross, as it manages to reduce the maximum speed around 165- 175km\/h depending on the rpm of engine and tire to use.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eIn the photos attached below  is an example of a very common speed graph (7,500rpm and 15” asphalt tires) where we get a top speed of 169.50 km\/h and another with the 13x64 group, where the top speed increases to 195 km\/h, more interesting top speed for a circuit use.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr data-start=\"371\" data-end=\"374\"\u003e\n\u003ch3 data-start=\"376\" data-end=\"389\"\u003eMaterial:\u003c\/h3\u003e\n\u003cp data-start=\"390\" data-end=\"591\"\u003eManufactured from \u003cstrong data-start=\"408\" data-end=\"444\"\u003ebillet and forged Ni-Cr-Mo steel\u003c\/strong\u003e, delivering exceptional mechanical strength, high impact resistance, and long-term durability under high torque and aggressive driving conditions.\u003c\/p\u003e\n\u003chr data-start=\"593\" data-end=\"596\"\u003e\n\u003ch3 data-start=\"598\" data-end=\"611\"\u003eHardness:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"614\" data-end=\"730\"\u003e\n\u003cstrong data-start=\"614\" data-end=\"627\"\u003eHRC 56–60\u003c\/strong\u003e, ensuring excellent resistance to wear and surface fatigue, even in demanding motorsport applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"732\" data-end=\"735\"\u003e\n\u003ch3 data-start=\"737\" data-end=\"760\"\u003eSurface Treatments:\u003c\/h3\u003e\n\u003cp data-start=\"761\" data-end=\"858\"\u003eMultiple advanced surface treatment processes are applied to maximize durability and reliability:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"861\" data-end=\"944\"\u003e\n\u003cstrong data-start=\"861\" data-end=\"877\"\u003eSandblasting\u003c\/strong\u003e – Ensures uniform surface finish and optimal surface preparation\u003c\/li\u003e\n\u003cli data-start=\"947\" data-end=\"1035\"\u003e\n\u003cstrong data-start=\"947\" data-end=\"963\"\u003eShot peening\u003c\/strong\u003e – Increases fatigue strength by inducing compressive surface stresses\u003c\/li\u003e\n\u003cli data-start=\"1038\" data-end=\"1142\"\u003e\n\u003cstrong data-start=\"1038\" data-end=\"1055\"\u003eWPC treatment\u003c\/strong\u003e – Enhances surface hardness, reduces friction, and improves micro-surface durability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1144\" data-end=\"1147\"\u003e\n\u003ch3 data-start=\"1149\" data-end=\"1169\"\u003eHeat Treatments:\u003c\/h3\u003e\n\u003cp data-start=\"1170\" data-end=\"1282\"\u003eTo achieve maximum strength, dimensional stability, and service life, the following heat treatments are applied:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli data-start=\"1285\" data-end=\"1375\"\u003e\n\u003cstrong data-start=\"1285\" data-end=\"1300\"\u003eCarburizing\u003c\/strong\u003e – Produces a hard, wear-resistant surface while maintaining a tough core\u003c\/li\u003e\n\u003cli data-start=\"1378\" data-end=\"1490\"\u003e\n\u003cstrong data-start=\"1378\" data-end=\"1401\"\u003eCryogenic treatment\u003c\/strong\u003e – Improves dimensional stability, wear resistance, and long-term gear mesh performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1492\" data-end=\"1495\"\u003e\n\u003ch3 data-start=\"1497\" data-end=\"1522\"\u003ePerformance Benefits:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-start=\"1525\" data-end=\"1584\"\u003eIncreased torque multiplication and improved acceleration\u003c\/li\u003e\n\u003cli data-start=\"1587\" data-end=\"1640\"\u003eDesigned specifically for \u003cstrong data-start=\"1613\" data-end=\"1638\"\u003eRenault JC5 gearboxes\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1643\" data-end=\"1708\"\u003eHigh resistance to shock loads and sustained high-RPM operation\u003c\/li\u003e\n\u003cli data-start=\"1711\" data-end=\"1774\"\u003eSuitable for \u003cstrong data-start=\"1724\" data-end=\"1738\"\u003emotorsport\u003c\/strong\u003e and \u003cstrong data-start=\"1743\" data-end=\"1774\"\u003ehigh-performance street use\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"RSX Racing Solutions","offers":[{"title":"4.29 - 14\/60","offer_id":54605133381976,"sku":"210601014","price":632.5,"currency_code":"EUR","in_stock":true},{"title":"4.92 - 13\/64","offer_id":54605133414744,"sku":"210601710","price":632.5,"currency_code":"EUR","in_stock":true},{"title":"5.67 - 12\/68","offer_id":54605133447512,"sku":"210601270","price":665.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0583\/3618\/2448\/files\/PSA_MA_x_Ptype_LSD_FD_Ratio_4.28--2.jpg?v=1740587302","url":"https:\/\/www.rsxracingsolutions.com\/products\/psa-ma-gearbox-final-drive-4-29-4-92-5-67-plate-type-lsd","provider":"RSX Racing Solutions","version":"1.0","type":"link"}