diff --git a/packages/swapper/src/swappers/RelaySwapper/constant.ts b/packages/swapper/src/swappers/RelaySwapper/constant.ts
index 5410eeef1a3..3439b2676a0 100644
--- a/packages/swapper/src/swappers/RelaySwapper/constant.ts
+++ b/packages/swapper/src/swappers/RelaySwapper/constant.ts
@@ -30,7 +30,6 @@ import {
   soneiumChainId,
   sonicChainId,
   storyChainId,
-  tronChainId,
   unichainChainId,
   worldChainChainId,
   zkSyncEraChainId,
@@ -87,7 +86,11 @@ export const chainIdToRelayChainId = {
   [gnosisChainId]: gnosis.id,
   [avalancheChainId]: avalanche.id,
   [bscChainId]: bsc.id,
-  [tronChainId]: 728126428,
+  // DISABLED: Tron deposits are built as simple TRC20 transfers instead of depositErc20() vault calls,
+  // and the Relay indexer notification is never sent for non-EVM chains. This causes deposits to be
+  // untracked by Relay, resulting in stuck/lost funds. Re-enable once the Tron transaction building
+  // is verified to use the Relay quote calldata (depositErc20) correctly.
+  // [tronChainId]: 728126428,
   [monadChainId]: monad.id,
   [hyperEvmChainId]: hyperEvm.id,
   [mantleChainId]: mantle.id,
diff --git a/packages/swapper/src/swappers/RelaySwapper/endpoints.ts b/packages/swapper/src/swappers/RelaySwapper/endpoints.ts
index dbca3fc700f..3f731f6849f 100644
--- a/packages/swapper/src/swappers/RelaySwapper/endpoints.ts
+++ b/packages/swapper/src/swappers/RelaySwapper/endpoints.ts
@@ -1,4 +1,4 @@
-import { evm, isEvmChainId } from '@shapeshiftoss/chain-adapters'
+import { evm } from '@shapeshiftoss/chain-adapters'
 import { TxStatus } from '@shapeshiftoss/unchained-client'
 import BigNumber from 'bignumber.js'
 
@@ -200,7 +200,7 @@ export const relayApi: SwapperApi = {
     if (
       swap.metadata.relayTransactionMetadata &&
       !txIndexingMap.has(swap.id) &&
-      isEvmChainId(chainId)
+      chainIdToRelayChainId[chainId] !== undefined
     ) {
       const relayTxParam = {
         ...swap.metadata.relayTransactionMetadata,
diff --git a/packages/swapper/src/swappers/RelaySwapper/utils/getTrade.ts b/packages/swapper/src/swappers/RelaySwapper/utils/getTrade.ts
index 753bb641e74..ce40d3b50ab 100644
--- a/packages/swapper/src/swappers/RelaySwapper/utils/getTrade.ts
+++ b/packages/swapper/src/swappers/RelaySwapper/utils/getTrade.ts
@@ -653,12 +653,13 @@ export async function getTrade<T extends 'quote' | 'rate'>({
 
       if (isRelayQuoteTronItemData(selectedItem.data)) {
         return {
-          allowanceContract: '',
+          allowanceContract: selectedItem.data?.parameter?.contract_address ?? '',
           solanaTransactionMetadata: undefined,
           relayTransactionMetadata: {
             relayId: quote.steps[0].requestId,
             orderId,
             to: selectedItem.data?.parameter?.contract_address,
+            data: selectedItem.data?.parameter?.data,
           },
         }
       }
diff --git a/packages/swapper/src/tron-utils/getUnsignedTronTransaction.ts b/packages/swapper/src/tron-utils/getUnsignedTronTransaction.ts
index ad51f0cb7eb..682d79b8abf 100644
--- a/packages/swapper/src/tron-utils/getUnsignedTronTransaction.ts
+++ b/packages/swapper/src/tron-utils/getUnsignedTronTransaction.ts
@@ -46,6 +46,22 @@ export const getUnsignedTronTransaction = ({
     })
   }
 
+  if (relayTransactionMetadata?.data) {
+    const to = relayTransactionMetadata.to
+    if (!to) throw new Error('Missing Relay transaction destination address')
+
+    const isNativeTron = sellAsset.assetId === tronAssetId
+    const value = isNativeTron ? step.sellAmountIncludingProtocolFeesCryptoBaseUnit : '0'
+
+    return adapter.buildCustomApiTx({
+      from,
+      to,
+      accountNumber,
+      data: relayTransactionMetadata.data,
+      value,
+    })
+  }
+
   const to = relayTransactionMetadata?.to ?? nearIntentsSpecific?.depositAddress
   if (!to) throw new Error('Missing transaction destination address')