diff --git a/modules/sdk-coin-eth/test/unit/transactionBuilder/flushTokens.ts b/modules/sdk-coin-eth/test/unit/transactionBuilder/flushTokens.ts
index 097127f13f..f21475551c 100644
--- a/modules/sdk-coin-eth/test/unit/transactionBuilder/flushTokens.ts
+++ b/modules/sdk-coin-eth/test/unit/transactionBuilder/flushTokens.ts
@@ -162,6 +162,41 @@ describe('Eth Transaction builder flush tokens (ETH-specific)', function () {
       txJson.data.should.startWith(flushForwarderTokensMethodIdV4);
     });
 
+    it('a SUSHI token flush from v4 forwarder with EIP-1559 fees', async () => {
+      // SUSHI mainnet contract: 0x6b3595068778dd592e39a122f4f5a5cf09c90fe2
+      // For v4 forwarder, contractAddress must equal forwarderAddress
+      const sushiContractAddress = '0x6b3595068778dd592e39a122f4f5a5cf09c90fe2';
+      const v4ForwarderAddress = '0x53b8e91bb3b8f618b5f01004ef108f134f219573';
+
+      const tx = await buildTransaction({
+        fee: {
+          fee: '30',
+          eip1559: {
+            maxPriorityFeePerGas: '2000000000',
+            maxFeePerGas: '30000000000',
+          },
+          gasLimit: '100000',
+        },
+        counter: 1,
+        forwarderAddress: v4ForwarderAddress,
+        tokenAddress: sushiContractAddress,
+        contractAddress: v4ForwarderAddress,
+        forwarderVersion: 4,
+      });
+
+      tx.type.should.equal(TransactionType.FlushTokens);
+      const txJson = tx.toJson();
+      txJson.gasLimit.should.equal('100000');
+      txJson._type.should.equals(ETHTransactionType.EIP1559);
+      txJson.maxFeePerGas!.should.equal('30000000000');
+      txJson.maxPriorityFeePerGas!.should.equal('2000000000');
+      txJson.to!.should.equal(v4ForwarderAddress);
+      should.equal(txJson.nonce, 1);
+      txJson.data.should.startWith(flushForwarderTokensMethodIdV4);
+      // Verify SUSHI contract address is encoded in calldata
+      txJson.data.should.containEql(sushiContractAddress.slice(2).toLowerCase());
+    });
+
     it('decode wallet flush forwarder transaction with forwarder Version 4', async () => {
       const tx = await buildTransaction({
         fee: {
diff --git a/modules/statics/src/coinFeatures.ts b/modules/statics/src/coinFeatures.ts
index 238d66dc6d..d96ef9ad71 100644
--- a/modules/statics/src/coinFeatures.ts
+++ b/modules/statics/src/coinFeatures.ts
@@ -702,7 +702,11 @@ export const POLYX_TOKEN_FEATURES = [
   CoinFeature.TOKEN_STANDARD_USES_ALTERNATIVE_ADDRESS_IDENTIFIER,
 ];
 
-export const ETH_FEATURES_WITH_FRANKFURT = [...ETH_FEATURES, CoinFeature.CUSTODY_BITGO_FRANKFURT];
+export const ETH_FEATURES_WITH_FRANKFURT = [
+  ...ETH_FEATURES,
+  CoinFeature.CUSTODY_BITGO_FRANKFURT,
+  CoinFeature.EIP1559,
+];
 export const ETH_FEATURES_WITH_GERMANY = [...ETH_FEATURES, CoinFeature.CUSTODY_BITGO_GERMANY];
 export const ETH_FEATURES_WITH_FRANKFURT_GERMANY = [...ETH_FEATURES_WITH_FRANKFURT, CoinFeature.CUSTODY_BITGO_GERMANY];
 export const SOL_TOKEN_FEATURES_WITH_FRANKFURT = [
diff --git a/modules/statics/test/unit/coins.ts b/modules/statics/test/unit/coins.ts
index 644323c0a0..d54bd51bbf 100644
--- a/modules/statics/test/unit/coins.ts
+++ b/modules/statics/test/unit/coins.ts
@@ -1288,6 +1288,7 @@ describe('Eip1559 coins', () => {
     'toas',
     'coredao',
     'tcoredao',
+    'sushi',
   ];
   it('should have EIP1559 feature', () => {
     eip1559Coins.forEach((coinName) => {