diff --git a/src/spec/index.ts b/src/spec/index.ts
index dbda889..ccb9b9a 100644
--- a/src/spec/index.ts
+++ b/src/spec/index.ts
@@ -256,6 +256,7 @@ interface SPECRunOptions {
     spec: string;
     output: string;
     platform?: '8a' | '6b' | 'host';
+    extraFlags?: string[];
     benchmarks?: string[];
     action?: 'build' | 'buildstep' | 'validate' | 'runsetup';
     buildType?: 'nobuild' | 'rebuild';
@@ -274,6 +275,7 @@ export async function runSPEC({
     benchmarks = ['intspeed', 'fpspeed'],
     action = 'validate',
     buildType = 'rebuild',
+    extraFlags,
     simd
 }: SPECRunOptions) {
     // Determine platform configuration
@@ -309,6 +311,10 @@ export async function runSPEC({
     // Select optimizations based on profile
     const optimizeFlags = optimizeProfiles[optimizeProfile as keyof typeof optimizeProfiles];
 
+    if (extraFlags) {
+        optimizeFlags.push(...extraFlags);
+    }
+
     // Create SPEC process runner
     const specInstance = mkSPEC(path.resolve(spec));