diff --git a/src/contractClients/acpContractClient.ts b/src/contractClients/acpContractClient.ts
index 647f0657..1f8d676a 100644
--- a/src/contractClients/acpContractClient.ts
+++ b/src/contractClients/acpContractClient.ts
@@ -9,6 +9,7 @@ import {
   encodeFunctionData,
   Hex,
   SignTypedDataParameters,
+  TransactionRequest,
 } from "viem";
 import { AcpContractConfig, baseAcpConfig } from "../configs/acpConfigs";
 import AcpError from "../acpError";
@@ -384,6 +385,12 @@ class AcpContractClient extends BaseAcpContractClient {
   signTypedData(typedData: SignTypedDataParameters): Promise<Hex> {
     return this.sessionKeyClient.signTypedData({ typedData });
   }
+
+  async sendTransaction(request: TransactionRequest): Promise<Hex> {
+    return await this.sessionKeyClient.sendTransaction(request, {
+      paymasterAndData: "0x",
+    });
+  }
 }
 
 export default AcpContractClient;
diff --git a/src/contractClients/acpContractClientV2.ts b/src/contractClients/acpContractClientV2.ts
index a0ef061b..374116dd 100644
--- a/src/contractClients/acpContractClientV2.ts
+++ b/src/contractClients/acpContractClientV2.ts
@@ -1,7 +1,6 @@
 import { Address, LocalAccountSigner, SmartAccountSigner } from "@aa-sdk/core";
-import { alchemy, defineAlchemyChain } from "@account-kit/infra";
+import { alchemy } from "@account-kit/infra";
 import {
-  createModularAccountV2,
   createModularAccountV2Client,
   ModularAccountV2Client,
 } from "@account-kit/smart-contracts";
@@ -11,7 +10,7 @@ import {
   Hex,
   http,
   SignTypedDataParameters,
-  zeroAddress,
+  TransactionRequest,
 } from "viem";
 import { AcpContractConfig, baseAcpConfigV2 } from "../configs/acpConfigs";
 import AcpError from "../acpError";
@@ -33,10 +32,6 @@ import { base, baseSepolia } from "viem/chains";
 import MEMO_MANAGER_ABI from "../abis/memoManagerAbi";
 
 class AcpContractClientV2 extends BaseAcpContractClient {
-  private PRIORITY_FEE_MULTIPLIER = 2;
-  private MAX_FEE_PER_GAS = 20000000;
-  private MAX_PRIORITY_FEE_PER_GAS = 21000000;
-  private GAS_FEE_MULTIPLIER = 0.5;
   private RETRY_CONFIG = {
     intervalMs: 200,
     multiplier: 1.1,
@@ -198,7 +193,7 @@ class AcpContractClientV2 extends BaseAcpContractClient {
     return BigInt("0x" + hex);
   }
 
-  get sessionKeyClient() {
+  private get sessionKeyClient() {
     if (!this._sessionKeyClient) {
       throw new AcpError("Session key client not initialized");
     }
@@ -214,28 +209,6 @@ class AcpContractClientV2 extends BaseAcpContractClient {
     return this._acpX402;
   }
 
-  private async calculateGasFees(chainId?: number) {
-    if (chainId) {
-      const { maxFeePerGas } = await this.publicClients[
-        chainId
-      ].estimateFeesPerGas();
-
-      const increasedMaxFeePerGas =
-        BigInt(maxFeePerGas) +
-        (BigInt(maxFeePerGas) * BigInt(this.GAS_FEE_MULTIPLIER * 100)) /
-          BigInt(100);
-
-      return increasedMaxFeePerGas;
-    }
-
-    const finalMaxFeePerGas =
-      BigInt(this.MAX_FEE_PER_GAS) +
-      BigInt(this.MAX_PRIORITY_FEE_PER_GAS) *
-        BigInt(Math.max(0, this.PRIORITY_FEE_MULTIPLIER - 1));
-
-    return finalMaxFeePerGas;
-  }
-
   async handleOperation(
     operations: OperationPayload[],
     chainId?: number
@@ -409,6 +382,12 @@ class AcpContractClientV2 extends BaseAcpContractClient {
   async signTypedData(typedData: SignTypedDataParameters): Promise<Hex> {
     return await this.sessionKeyClient.signTypedData({ typedData });
   }
+
+  async sendTransaction(request: TransactionRequest): Promise<Hex> {
+    return await this.sessionKeyClient.sendTransaction(request, {
+      paymasterAndData: "0x",
+    });
+  }
 }
 
 export default AcpContractClientV2;
diff --git a/src/contractClients/baseAcpContractClient.ts b/src/contractClients/baseAcpContractClient.ts
index aa905efd..89785cab 100644
--- a/src/contractClients/baseAcpContractClient.ts
+++ b/src/contractClients/baseAcpContractClient.ts
@@ -12,6 +12,7 @@ import {
   zeroAddress,
   SignTypedDataParameters,
   Hex,
+  TransactionRequest,
 } from "viem";
 import { AcpContractConfig, baseAcpConfig } from "../configs/acpConfigs";
 import ACP_V2_ABI from "../abis/acpAbiV2";
@@ -603,6 +604,8 @@ abstract class BaseAcpContractClient {
   abstract getAcpVersion(): string;
 
   abstract signTypedData(typedData: SignTypedDataParameters): Promise<Hex>;
+
+  abstract sendTransaction(request: TransactionRequest): Promise<Hex>;
 }
 
 export default BaseAcpContractClient;