The Mitsubishi Lancer Evolution X (4B11T) is rated 291 hp (SAE net (secondary listing) · US market) at 6,500 rpm and weighs 3,571 lb (US curb 3,571 lb (secondary listing, SST car); a GSR 5MT figure was not fetched), or 12.3 lb/hp. On enthusiast estimates its stock internals are taken to about ~480 hp, the fuel system to around ~380 hp, and the stock turbo(s) are taken to about ~360 hp. Below: the sourced spec sheet, the limit sheet carbuildcheck analyzes against, and the platform's community-documented weak points.
Units
01 Spec sheet sourced
Engine4B11T · 1,998 cc · I4
Engine code4B11T
Bore × stroke86 × 86 mm
Compression9.0:1
Inductionsingle turbo
Fuel systemport
Rated power291 hp · SAE net (secondary listing) · US market @ 6,500 rpm
rotating assembly ceiling · fails first: rods and the timing chain on early cars · 93 AKI · no named source: site planning estimate · site planning figure ~480 hp; no named 4B11T tuner source was fetched
Induction ceiling~360 hp
stock turbo / supercharger ceiling · fails first: stock turbo out of efficiency · 93 AKI · no named source: site planning estimate · site planning figure ~360 hp
Fuel system~380 hp
stock fuel-system ceiling · fails first: stock injectors and pump · 93 AKI · no named source: site planning estimate · site planning figure; no named source in this audit
Clutch (manual)~340 hp
stock clutch torque capacity · fails first: stock clutch slip (5MT) · no named source: site planning estimate · site planning figure; no named source in this audit
Transmission (dual-clutch)~400 hp
gearbox / driveline rating · fails first: SST clutch packs and temperature · no named source: site planning estimate · site planning figure; no named source in this audit
Cooling (sustained)~400 hp
thermal ceiling for sustained load · fails first: SST and intercooler temperature · no named source: site planning estimate · site planning figure; no named source in this audit
Tuning limitsenthusiast estimates, crank hp on the stated fuel; sources: none named yet; method: the analyzer plans on the lower bound of each range
⚑The SST gearbox wants a TCU tune and a cooler once power climbs (community consensus). The 5MT is the tuner pick for big builds.
⚑Timing chain stretch on early 4B11Ts is community-documented. Verify the service history before boost.
04 The typical path
Stage 1 tune → intake → downpipe → intercooler → Stage 2 tune. Fueling before E85; the clutch on a manual, a gearbox calibration on a dual-clutch before sticky tires.
Analyze your Lancer Evolution X (4B11T) build
Tap your mods, set a goal. Score, weak link, roadmap. Free, no login.
buying used? check the history first — the link gets you 20% off ↗Partner link
Partner link: may earn carbuildcheck a commission at no extra cost to you. The stock limits, weak points and upgrade path on this page are documented independently and never influenced.
Partner link: may earn carbuildcheck a commission at no extra cost to you. Fitment is per-platform, so check bolt pattern, center bore, offset and tire size against your own car before ordering anything, and note this retailer ships within the US. The stock limits, weak points and upgrade path on this page are documented independently.
↗Partner link