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Prices may varyThis product ranks #13 of 15 in Brake Rotors.Three above it ↓
Last reviewed July 11, 2026
TL;DR Detroit Axle's R-31554 front rotor pair fits the 2010-2021 5th-gen 4Runner. It discloses a standard zinc coating but no iron grade or runout tolerance, well-reviewed by owners overall but not without warping complaints elsewhere in the brand's catalog.
This vented front rotor pair replaces the factory 338mm rotor on the 5th-gen 4Runner. Detroit Axle is not an OE supplier to Toyota and discloses no iron grade for this part. The zinc finish is a standard single-layer coating, not premium geomet. No runout tolerance is published. Owners broadly report good fit and stopping power for the price, though the brand's wider catalog also carries warping complaints, unconfirmed for this application. Fitment is verified for 2010-2021; newer years are not yet independently confirmed for this part.
Buy if you're replacing worn front rotors on a 2010-2021 4Runner on a budget, with a 10-year warranty. Skip if you tow heavy loads, live in a harsh salt-belt climate, or want documented OE-supplier metallurgy with a published runout tolerance.
No chemical exposure pathway: this is an inert cast-iron part with no SDS. Brake service stirs up dust: wear a dust mask and never blow it out with compressed air, a hazard belonging to the service procedure, not the rotor. The cast iron recycles as ferrous scrap; the zinc coating gives standard rust resistance.
Yes, for the model years this part covers. The 5th-generation 4Runner uses a single front brake package across every trim, including SR5, TRD Off-Road, TRD Pro, Limited, and Trail, so the same 338mm rotor applies platform-wide. This listing is confirmed for the 2010-2021 model years; newer years and the related Lexus GX460 were not independently confirmed for this specific part and are not asserted here.
The manufacturer discloses a standard zinc exterior finish, a single-layer anti-corrosion coating class rather than a premium geomet or multi-layer coating.
No. Toyota's brake-systems OE supplier is Advics. Detroit Axle is an aftermarket cross-reference manufacturer with no OE relationship to Toyota.
No. This listing is the front rotor pair only. Pads and any retaining hardware are sold separately.
No. Detroit Axle does not publish a runout or thickness-variation tolerance figure for this part number, so that dimension is scored conservatively rather than assumed.
The Amazon listing for Detroit Axle R-31554 Premium Front Brake Rotor carries a California Prop 65 warning. California requires this warning on a very wide range of manufactured goods — including rubber, vinyl, plastic, and metal automotive parts — whenever trace exposure to any of roughly 900 listed substances (commonly phthalates or heavy metals) is possible, regardless of whether the specific product poses a meaningful health risk. As a passive accessory, Detroit Axle R-31554 Premium Front Brake Rotor has no Safety Data Sheet, so there's no chemistry breakdown to translate beyond that.
Marketing copy from Detroit Axle, via Amazon. Not editorial.
Per manufacturer cross-reference. Verify on Amazon before purchase.
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