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Restore Confident Rear Handling on Your M37 or M35h
Sagging rear ride height and a harsh, clunky ride on your Infiniti M37 or M35h usually point to worn factory struts and a tired spring. The KYB SR4825 Strut-Plus assembly replaces the entire rear left corner in one unit, so there is no separate spring compressor, no reused worn hardware, and no guesswork matching parts.
Key Features
- Complete strut, coil spring, and mount assembled and tested as one unit
- Gas-charged twin tube damper restores factory ride height and control
- Vehicle specific spring rate matched to rear left corner weight
- Includes upper mount, bearing, and jounce bumper for a true bolt in fit
- Direct OE style replacement with no core charge required
Fitment Table
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2011-2013 | Infiniti | M37 | RWD |
| 2012-2013 | Infiniti | M35h | RWD |
Specifications
| Detail | Value |
|---|---|
| MPN | SR4825 |
| Brand | KYB |
| Position | Rear Left |
| Product Line | Strut-Plus |
| Damper Type | Gas-charged twin tube |
| Drive Type | RWD only |
| UPC | Not publicly listed by manufacturer |
| Warranty | 1 year limited (KYB Strut-Plus) |
What's Included
- 1x KYB SR4825 rear left strut and coil spring assembly
- Upper strut mount and bearing
- Jounce bumper and dust boot
- Mounting hardware
About KYB
KYB has engineered shock absorbers and struts for original equipment manufacturers for decades, and that same OE experience carries into every Strut-Plus assembly. Each unit is built to restore the ride quality and handling the vehicle had when new, using components matched specifically to the vehicle application rather than a generic universal spring rate.
FAQ
What is the SR4825?The SR4825 is a KYB Strut-Plus complete strut assembly for the rear left position on RWD Infiniti M37 and M35h models. It combines a gas-charged strut, coil spring, and upper mount into one pre-assembled unit for direct installation.
Does the SR4825 fit AWD Infiniti M37 models?No. The SR4825 is designed specifically for RWD M37 and M35h models. AWD versions use a different rear suspension setup and require a different part number.
Do I need to replace the spring separately?No. The SR4825 already includes a vehicle specific coil spring, so there is no need to compress or transfer the old spring, and no separate spring purchase is required.
Is the SR4825 sold as a single unit or a pair?The SR4825 is sold individually and covers the rear left position only. The rear right position uses the KYB SR4842.
Will the SR4825 restore my original ride height?Yes. The coil spring rate is matched to the factory application, so ride height returns to the vehicle's original specification once installed correctly.
Can I install the SR4825 myself?Many owners with strut replacement experience can install it at home, since no spring compression is required. However, alignment should be checked afterward, and a shop visit is recommended if you are not comfortable with suspension work.
Does the SR4825 include a warranty?Yes. KYB Strut-Plus assemblies carry a 1 year limited warranty against manufacturing defects.
Will the SR4825 work with lowering springs or a sport suspension upgrade?No. The SR4825 is designed to restore factory ride height and handling characteristics. It is not intended for use with aftermarket lowering springs or performance suspension modifications.
Install Instructions
- Raise and safely support the rear of the vehicle, then remove the wheel
- Disconnect the sway bar end link and any brake line brackets attached to the strut
- Remove the lower strut bolts from the knuckle and the upper mount nuts in the trunk or cargo area
- Remove the old strut assembly and transfer any wiring harness clips to the new unit
- Install the SR4825 in the rear left position and torque all hardware to factory specification
- Reconnect the sway bar end link and any brackets removed earlier
- Reinstall the wheel and lower the vehicle
- Have the rear alignment checked and adjusted as needed
KYB
KYB offers a complete line of shock absorbers, struts, and strut assemblies for cars, trucks, SUVs and Cross-overs. We also design and manufacture steering stabilizers, and provide a full line of shock and strut accessories including mounting hardware, coil spring insulators, coil springs, strut mounts, jounce bumpers, and bellows. KYB is one of the world’s largest suppliers of shocks and struts for new vehicle manufacturers. Our products can be found on some of the most popular cars, SUVs and trucks in North America. Because we make ‘original equipment’ we know exactly how vehicles perform and handle when new, and we can help keep them operating as designed, for as long as they’re on the road. The KYB catalog includes the following models: Excel-G, Strut-Plus, Gas-a-Just, MonoMax, Truck-Plus, KYB JAOS, Truck-Plus, Leveling Assembly, Strut Mounts and Boots, Steering Stabilizers, Self-Leveling & Electronic Shocks.
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