This thread is for discussion of vented rear rotors unique to Early '95 AWD DSM's. Any info or questions specific to this topic are welcome, including swaps onto other DSM's. Part numbers are encouraged and will be added to the list once verified.
OEM Replacement Part Numbers (Brand/Vendor):
Rotors
76569RGS (BrakeBest/Oreilly)
NB 4886569 (NAPA)
121.46048 (Centric/Online)
Caliper Brackets
MB857904 (Mitsubishi)
Calipers
CAL SE5217A (NAPA)
Pads
T.B.D.
FAQ's:
What is an Early '95?
Early '95 is the name given to the group of AWD DSM's manufactured before November 1994. These cars came equipped with some rare parts such as Viscous LSD, EPROM ECU, and large vented rear rotors. While the VLSD and EPROM are nothing new to the DSM platform, rear brakes of such caliber aren't found on any other DSM.
Do I have an Early 95?
To determine if you have an Early 95, check the production date of your DSM. This can be found on the info plate located behind the battery, or the sticker located within the driver side door jamb. If your date of manufacture is before November 1994, then you have an Early 95.
Why doesn't my Early 95 have vented rear rotors?
It's not uncommon for people to purchase normal rear brakes, ignore the obvious size difference, and just install them anyways. It's best to pull a wheel off and inspect the brakes up close, then go get what you need.
Should I upgrade to the larger, vented rear brakes? What are the benefits and risks?
If your asking this question then I would strongly urge you to read up on Braking Bias. In a nut shell- You don't want more stopping power in the rear alone. As you brake more aggressively the vehicle's weight will shift forward onto the front wheels and off the back. The added weight in front gives those tires more traction while reducing weight and traction at the rear. More traction means more stopping force without locking up, and vice versa. Not to imply that it's wrong to upgrade the rears; Proper braking bias goes both ways. Just consider the warning.
Speaking from personal experience, the bias is all out of whack with stock 2-pot fronts and vented rears. It makes for some fun times on dirt and snow, but you have to be ready to fight the rear end during an emergency stop. It's not hard to see why Mitsu went right back to small/solid rotors. So upgraded front brakes are a requirement before even considering the rear.
What's the big deal?
Simply put, the Early 95 rear rotors are huge compared to normal 2g rotors. Their diameter is ~284mm versus the normal 265mm. They're also 20mm thick and vented, while normal 2g rear's are only 1/2 as thick and solid as a rock.
OEM Replacement Part Numbers (Brand/Vendor):
Rotors
76569RGS (BrakeBest/Oreilly)
NB 4886569 (NAPA)
121.46048 (Centric/Online)
Caliper Brackets
MB857904 (Mitsubishi)
Calipers
CAL SE5217A (NAPA)
Pads
T.B.D.
FAQ's:
What is an Early '95?
Early '95 is the name given to the group of AWD DSM's manufactured before November 1994. These cars came equipped with some rare parts such as Viscous LSD, EPROM ECU, and large vented rear rotors. While the VLSD and EPROM are nothing new to the DSM platform, rear brakes of such caliber aren't found on any other DSM.
Do I have an Early 95?
To determine if you have an Early 95, check the production date of your DSM. This can be found on the info plate located behind the battery, or the sticker located within the driver side door jamb. If your date of manufacture is before November 1994, then you have an Early 95.
Why doesn't my Early 95 have vented rear rotors?
It's not uncommon for people to purchase normal rear brakes, ignore the obvious size difference, and just install them anyways. It's best to pull a wheel off and inspect the brakes up close, then go get what you need.
Should I upgrade to the larger, vented rear brakes? What are the benefits and risks?
If your asking this question then I would strongly urge you to read up on Braking Bias. In a nut shell- You don't want more stopping power in the rear alone. As you brake more aggressively the vehicle's weight will shift forward onto the front wheels and off the back. The added weight in front gives those tires more traction while reducing weight and traction at the rear. More traction means more stopping force without locking up, and vice versa. Not to imply that it's wrong to upgrade the rears; Proper braking bias goes both ways. Just consider the warning.
Speaking from personal experience, the bias is all out of whack with stock 2-pot fronts and vented rears. It makes for some fun times on dirt and snow, but you have to be ready to fight the rear end during an emergency stop. It's not hard to see why Mitsu went right back to small/solid rotors. So upgraded front brakes are a requirement before even considering the rear.
What's the big deal?
Simply put, the Early 95 rear rotors are huge compared to normal 2g rotors. Their diameter is ~284mm versus the normal 265mm. They're also 20mm thick and vented, while normal 2g rear's are only 1/2 as thick and solid as a rock.
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Last edited:
, i just got the ones for a 3000gt they didn't fit great but with some tin snips I made them work, they were rubbing the rotor slightly.
