Description
Take your Mercedes-AMG’s performance to the next level with the PTG Alternative Ratio Ring and Pinion Set, specifically designed by Premier Tuning Group for high-powered builds running M156, M157, or M177 engines. Featuring a taller 2.65:1 gear ratio, this precision-engineered upgrade helps maintain your C63’s powerband during aggressive acceleration, quarter-mile racing, and roll races – especially beneficial for vehicles with larger turbochargers or increased power output.
The 2.65:1 ratio offers a significant advantage over the OEM 2.82:1 (sedan) and 3.06:1 (coupe) final drive ratios by improving traction and power delivery in the upper RPM range. This translates to improved 60–130 mph and 100–200 km/h performance metrics, helping you achieve record-breaking results on track or street.
Engineered to be a direct bolt-in replacement for your factory differential gear set, the PTG ring and pinion set is fully compatible with the factory housing and integrates seamlessly with PTG’s Wavetrac Differential Kit (PN 013-1522-1775). Custom gear ratios are also available upon request to fine-tune your AMG’s power delivery for street driving, circuit racing, or daily use.
Note: This product requires ECU tuning to properly calibrate your vehicle to the new gear ratio. Lead time is approximately 2–3 weeks as this product is made to order. Be sure to specify your exact vehicle application when placing your order.
Key Features:
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2.65:1 taller final drive ratio for optimized acceleration and top-end pull
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Ideal for high-powered AMGs with upgraded turbos or ethanol fueling setups
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Enhances 60–130 mph and 100–200 km/h acceleration times
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Bolt-in installation with factory Mercedes differential housing
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Compatible with PTG Wavetrac Differential Kit (PN 013-1522-1775)
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Developed using race-proven experience from PTG’s world-record-setting C63s
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Available gear ratio customization based on performance goals
Fitment:
Engine Platforms:
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M156 6.2L V8
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M157 5.5L Twin Turbo V8
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M177 4.0L Twin Turbo V8
Compatible Mercedes-AMG Models:
C63 (M177):
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2015, 2016, 2017, 2018, 2019, 2020, 2021
GLC63 (M177):
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2018, 2019, 2020, 2021
E63 (M157):
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2011, 2012, 2013, 2014, 2015, 2016, 2017
CLS63 (M157):
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2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
SL63 (M157):
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2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
S63 (M157):
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2011, 2012, 2013, 2014, 2015, 2016, 2017
C63 (M156):
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2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015
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C63 Black Series (2012, 2013)
E63 (M156):
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2007, 2008, 2009, 2010
CLS63 (M156):
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2007, 2008, 2009, 2010
ML63 (M156):
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2006, 2007, 2008, 2009, 2010, 2011
S63 (M156):
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2007, 2008, 2009, 2010, 2011
CL63 (M156):
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2007, 2008, 2009, 2010
SL63 (M156):
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2007, 2008, 2009, 2010, 2011, 2012
R63 (M156):
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2007
CLK63 (M156):
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2007, 2008, 2009, 2010
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CLK63 Black Series (2008)
Upgrade your Mercedes-AMG’s drivetrain with the PTG Alternative Ratio Ring and Pinion Set and experience optimized gear delivery, improved acceleration, and enhanced control for high-performance driving.
