diff --git a/src/clients/SpokePoolClient.ts b/src/clients/SpokePoolClient.ts
index dc2518cb6..cb6b51e52 100644
--- a/src/clients/SpokePoolClient.ts
+++ b/src/clients/SpokePoolClient.ts
@@ -78,14 +78,15 @@ export class IndexedSpokePoolClient extends clients.SpokePoolClient {
    */
   protected startWorker(): void {
     const {
-      eventSearchConfig: { fromBlock, maxBlockLookBack: blockRange },
+      eventSearchConfig: { fromBlock, maxBlockLookBack: blockrange },
+      spokePool: { address: spokepool },
     } = this;
-    const opts = { blockRange, lookback: `@${fromBlock}` };
+    const opts = { spokepool, blockrange, lookback: `@${fromBlock}` };
 
     const args = Object.entries(opts)
       .map(([k, v]) => [`--${k}`, `${v}`])
       .flat();
-    this.worker = spawn("node", [this.indexerPath, "--chainId", this.chainId.toString(), ...args], {
+    this.worker = spawn("node", [this.indexerPath, "--chainid", this.chainId.toString(), ...args], {
       stdio: ["ignore", "inherit", "inherit", "ipc"],
     });
 
diff --git a/src/common/Constants.ts b/src/common/Constants.ts
index 73e67b531..59fe6b34e 100644
--- a/src/common/Constants.ts
+++ b/src/common/Constants.ts
@@ -127,7 +127,7 @@ export const CHAIN_MAX_BLOCK_LOOKBACK = {
   [CHAIN_IDs.BOBA]: 4990,
   [CHAIN_IDs.LINEA]: 5000,
   [CHAIN_IDs.LISK]: 10000,
-  [CHAIN_IDs.MAINNET]: 10000,
+  [CHAIN_IDs.MAINNET]: 5000,
   [CHAIN_IDs.MODE]: 10000,
   [CHAIN_IDs.OPTIMISM]: 10000, // Quick
   [CHAIN_IDs.POLYGON]: 10000,
diff --git a/src/libexec/RelayerSpokePoolIndexer.ts b/src/libexec/RelayerSpokePoolIndexer.ts
index e6b211734..cca604523 100644
--- a/src/libexec/RelayerSpokePoolIndexer.ts
+++ b/src/libexec/RelayerSpokePoolIndexer.ts
@@ -15,6 +15,7 @@ import {
   getOriginFromURL,
   getProvider,
   getRedisCache,
+  getSpokePool,
   getWSProviders,
   Logger,
   winston,
@@ -117,11 +118,11 @@ async function listen(
  */
 async function run(argv: string[]): Promise<void> {
   const minimistOpts = {
-    string: ["lookback", "relayer"],
+    string: ["lookback", "relayer", "spokepool"],
   };
   const args = minimist(argv, minimistOpts);
 
-  const { chainId, lookback, relayer = null, maxBlockRange = 10_000 } = args;
+  const { chainId: chainId, lookback, relayer = null, blockrange: maxBlockRange = 10_000 } = args;
   assert(Number.isInteger(chainId), "chainId must be numeric ");
   assert(Number.isInteger(maxBlockRange), "maxBlockRange must be numeric");
   assert(!isDefined(relayer) || ethersUtils.isAddress(relayer), `relayer address is invalid (${relayer})`);
@@ -129,6 +130,12 @@ async function run(argv: string[]): Promise<void> {
   const { quorum = getChainQuorum(chainId) } = args;
   assert(Number.isInteger(quorum), "quorum must be numeric ");
 
+  let { spokepool: spokePoolAddr } = args;
+  assert(
+    !isDefined(spokePoolAddr) || ethersUtils.isAddress(spokePoolAddr),
+    `Invalid SpokePool address (${spokePoolAddr})`
+  );
+
   chain = getNetworkName(chainId);
 
   const quorumProvider = await getProvider(chainId);
@@ -152,16 +159,21 @@ async function run(argv: string[]): Promise<void> {
     logger.debug({ at: "RelayerSpokePoolIndexer::run", message: `Skipping lookback on ${chain}.` });
   }
 
+  const spokePool = getSpokePool(chainId, spokePoolAddr);
+  if (!isDefined(spokePoolAddr)) {
+    ({ address: spokePoolAddr } = spokePool);
+  }
+
   const opts = {
-    quorum,
+    spokePool: spokePoolAddr,
     deploymentBlock,
     lookback: latestBlock.number - startBlock,
     maxBlockRange,
     filterArgs: getEventFilterArgs(relayer),
+    quorum,
   };
 
   logger.debug({ at: "RelayerSpokePoolIndexer::run", message: `Starting ${chain} SpokePool Indexer.`, opts });
-  const spokePool = await utils.getSpokePoolContract(chainId);
 
   process.on("SIGHUP", () => {
     logger.debug({ at: "Relayer#run", message: `Received SIGHUP in ${chain} listener, stopping...` });
diff --git a/src/libexec/SpokePoolListenerExperimental.ts b/src/libexec/SpokePoolListenerExperimental.ts
index 5236575c7..0a14c9d4f 100644
--- a/src/libexec/SpokePoolListenerExperimental.ts
+++ b/src/libexec/SpokePoolListenerExperimental.ts
@@ -18,6 +18,7 @@ import {
   getNodeUrlList,
   getOriginFromURL,
   getProvider,
+  getSpokePool,
   getRedisCache,
   Logger,
   winston,
@@ -161,12 +162,12 @@ async function listen(eventMgr: EventManager, spokePool: Contract, eventNames: s
  */
 async function run(argv: string[]): Promise<void> {
   const minimistOpts = {
-    string: ["lookback", "relayer"],
+    string: ["lookback", "relayer", "spokepool"],
   };
   const args = minimist(argv, minimistOpts);
 
-  ({ chainId } = args);
-  const { lookback, relayer = null, maxBlockRange = 10_000 } = args;
+  ({ chainid: chainId } = args);
+  const { lookback, relayer = null, blockrange: maxBlockRange = 10_000 } = args;
   assert(Number.isInteger(chainId), "chainId must be numeric ");
   assert(Number.isInteger(maxBlockRange), "maxBlockRange must be numeric");
   assert(!isDefined(relayer) || ethersUtils.isAddress(relayer), `relayer address is invalid (${relayer})`);
@@ -174,6 +175,12 @@ async function run(argv: string[]): Promise<void> {
   const { quorum = getChainQuorum(chainId) } = args;
   assert(Number.isInteger(quorum), "quorum must be numeric ");
 
+  let { spokepool: spokePoolAddr } = args;
+  assert(
+    !isDefined(spokePoolAddr) || ethersUtils.isAddress(spokePoolAddr),
+    `Invalid SpokePool address (${spokePoolAddr})`
+  );
+
   chain = getNetworkName(chainId);
 
   const quorumProvider = await getProvider(chainId);
@@ -197,16 +204,21 @@ async function run(argv: string[]): Promise<void> {
     logger.debug({ at: "RelayerSpokePoolListener::run", message: `Skipping lookback on ${chain}.` });
   }
 
+  const spokePool = getSpokePool(chainId, spokePoolAddr);
+  if (!isDefined(spokePoolAddr)) {
+    ({ address: spokePoolAddr } = spokePool);
+  }
+
   const opts = {
-    quorum,
+    spokePool: spokePoolAddr,
     deploymentBlock,
     lookback: latestBlock.number - startBlock,
     maxBlockRange,
     filterArgs: getEventFilterArgs(relayer),
+    quorum,
   };
 
   logger.debug({ at: "RelayerSpokePoolListener::run", message: `Starting ${chain} SpokePool Indexer.`, opts });
-  const spokePool = await utils.getSpokePoolContract(chainId);
 
   process.on("SIGHUP", () => {
     logger.debug({ at: "Relayer#run", message: `Received SIGHUP in ${chain} listener, stopping...` });
diff --git a/src/utils/ContractUtils.ts b/src/utils/ContractUtils.ts
index 31bf09e60..d4e4206b0 100644
--- a/src/utils/ContractUtils.ts
+++ b/src/utils/ContractUtils.ts
@@ -1,32 +1,43 @@
-import { getNetworkName, Contract, Signer, getDeployedAddress, getDeployedBlockNumber } from ".";
-
 import * as typechain from "@across-protocol/contracts"; // TODO: refactor once we've fixed export from contract repo
+import { CHAIN_IDs, getNetworkName, Contract, Signer, getDeployedAddress, getDeployedBlockNumber } from ".";
 
 // Return an ethers contract instance for a deployed contract, imported from the Across-protocol contracts repo.
 export function getDeployedContract(contractName: string, networkId: number, signer?: Signer): Contract {
   try {
     const address = getDeployedAddress(contractName, networkId);
     // If the contractName is SpokePool then we need to modify it to find the correct contract factory artifact.
-    const factoryName = contractName === "SpokePool" ? castSpokePoolName(networkId) : contractName;
-    const artifact = typechain[`${[factoryName.replace("_", "")]}__factory`];
+    const factoryName = `${contractName === "SpokePool" ? castSpokePoolName(networkId) : contractName}__factory`;
+    const artifact = typechain[factoryName];
     return new Contract(address, artifact.abi, signer);
   } catch (error) {
-    throw new Error(`Could not find address for contract ${contractName} on ${networkId}`);
+    throw new Error(`Could not find address for contract ${contractName} on ${networkId} (${error})`);
   }
 }
 
 // If the name of the contract is SpokePool then we need to apply a transformation on the name to get the correct
 // contract factory name. For example, if the network is "mainnet" then the contract is called Ethereum_SpokePool.
 export function castSpokePoolName(networkId: number): string {
-  let networkName = getNetworkName(networkId);
-  if (networkName == "Mainnet" || networkName == "Rinkeby" || networkName == "Kovan" || networkName == "Goerli") {
-    return "Ethereum_SpokePool";
+  let networkName: string;
+  switch (networkId) {
+    case CHAIN_IDs.MAINNET:
+    case CHAIN_IDs.SEPOLIA:
+      return "Ethereum_SpokePool";
+    case CHAIN_IDs.ARBITRUM:
+      return "Arbitrum_SpokePool";
+    case CHAIN_IDs.ZK_SYNC:
+      return "ZkSync_SpokePool";
+    default:
+      networkName = getNetworkName(networkId);
   }
 
-  if (networkName.includes("-")) {
-    networkName = networkName.substring(0, networkName.indexOf("-"));
-  }
-  return `${networkName}_SpokePool`;
+  return `${networkName.replace(" ", "")}_SpokePool`;
+}
+
+// For a chain ID and optional SpokePool address, return a Contract instance with the corresponding ABI.
+export function getSpokePool(chainId: number, address?: string): Contract {
+  const factoryName = castSpokePoolName(chainId);
+  const artifact = typechain[`${factoryName}__factory`];
+  return new Contract(address ?? getDeployedAddress("SpokePool", chainId), artifact.abi);
 }
 
 export function getParamType(contractName: string, functionName: string, paramName: string): string {