diff --git a/crates/eips/src/eip7002.rs b/crates/eips/src/eip7002.rs
index 43a11df5c06..fb3780337fe 100644
--- a/crates/eips/src/eip7002.rs
+++ b/crates/eips/src/eip7002.rs
@@ -25,6 +25,7 @@ pub const WITHDRAWAL_REQUEST_TYPE: u8 = 0x01;
 #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash, RlpEncodable, RlpDecodable, Default)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]
 #[cfg_attr(feature = "serde", serde(rename_all = "camelCase"))]
+#[cfg_attr(feature = "ssz", derive(ssz_derive::Encode, ssz_derive::Decode))]
 #[cfg_attr(any(test, feature = "arbitrary"), derive(arbitrary::Arbitrary))]
 pub struct WithdrawalRequest {
     /// Address of the source of the exit.
diff --git a/crates/rpc-types-beacon/src/relay.rs b/crates/rpc-types-beacon/src/relay.rs
index d15feb8e3a8..5b1b056843b 100644
--- a/crates/rpc-types-beacon/src/relay.rs
+++ b/crates/rpc-types-beacon/src/relay.rs
@@ -6,6 +6,7 @@ use crate::{BlsPublicKey, BlsSignature};
 use alloy_primitives::{Address, B256, U256};
 use alloy_rpc_types_engine::{
     BlobsBundleV1, ExecutionPayload, ExecutionPayloadV1, ExecutionPayloadV2, ExecutionPayloadV3,
+    ExecutionPayloadV4,
 };
 use serde::{Deserialize, Serialize};
 use serde_with::{serde_as, DisplayFromStr};
@@ -139,6 +140,22 @@ pub struct SignedBidSubmissionV3 {
     pub signature: BlsSignature,
 }
 
+/// Submission for the `/relay/v1/builder/blocks` endpoint (Electra).
+#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
+#[serde(deny_unknown_fields)]
+#[cfg_attr(feature = "ssz", derive(ssz_derive::Decode, ssz_derive::Encode))]
+pub struct SignedBidSubmissionV4 {
+    /// The [`BidTrace`] message associated with the submission.
+    pub message: BidTrace,
+    /// The execution payload for the submission.
+    #[serde(with = "crate::payload::beacon_payload_v4")]
+    pub execution_payload: ExecutionPayloadV4,
+    /// The Electra block bundle for this bid.
+    pub blobs_bundle: BlobsBundleV1,
+    /// The signature associated with the submission.
+    pub signature: BlsSignature,
+}
+
 /// SubmitBlockRequest is the request from the builder to submit a block.
 #[derive(Clone, Debug, PartialEq, Eq, Serialize, Deserialize)]
 pub struct SubmitBlockRequest {
diff --git a/crates/rpc-types-engine/src/payload.rs b/crates/rpc-types-engine/src/payload.rs
index 1d35a261594..93e37fb0291 100644
--- a/crates/rpc-types-engine/src/payload.rs
+++ b/crates/rpc-types-engine/src/payload.rs
@@ -476,6 +476,118 @@ impl ExecutionPayloadV4 {
     }
 }
 
+#[cfg(feature = "ssz")]
+impl ssz::Decode for ExecutionPayloadV4 {
+    fn is_ssz_fixed_len() -> bool {
+        false
+    }
+
+    fn from_ssz_bytes(bytes: &[u8]) -> Result<Self, ssz::DecodeError> {
+        let mut builder = ssz::SszDecoderBuilder::new(bytes);
+
+        builder.register_type::<B256>()?;
+        builder.register_type::<Address>()?;
+        builder.register_type::<B256>()?;
+        builder.register_type::<B256>()?;
+        builder.register_type::<Bloom>()?;
+        builder.register_type::<B256>()?;
+        builder.register_type::<u64>()?;
+        builder.register_type::<u64>()?;
+        builder.register_type::<u64>()?;
+        builder.register_type::<u64>()?;
+        builder.register_type::<Bytes>()?;
+        builder.register_type::<U256>()?;
+        builder.register_type::<B256>()?;
+        builder.register_type::<Vec<Bytes>>()?;
+        builder.register_type::<Vec<Withdrawal>>()?;
+        builder.register_type::<u64>()?;
+        builder.register_type::<u64>()?;
+        builder.register_type::<Vec<DepositRequest>>()?;
+        builder.register_type::<Vec<WithdrawalRequest>>()?;
+        builder.register_type::<Vec<ConsolidationRequest>>()?;
+
+        let mut decoder = builder.build()?;
+
+        Ok(Self {
+            payload_inner: ExecutionPayloadV3 {
+                payload_inner: ExecutionPayloadV2 {
+                    payload_inner: ExecutionPayloadV1 {
+                        parent_hash: decoder.decode_next()?,
+                        fee_recipient: decoder.decode_next()?,
+                        state_root: decoder.decode_next()?,
+                        receipts_root: decoder.decode_next()?,
+                        logs_bloom: decoder.decode_next()?,
+                        prev_randao: decoder.decode_next()?,
+                        block_number: decoder.decode_next()?,
+                        gas_limit: decoder.decode_next()?,
+                        gas_used: decoder.decode_next()?,
+                        timestamp: decoder.decode_next()?,
+                        extra_data: decoder.decode_next()?,
+                        base_fee_per_gas: decoder.decode_next()?,
+                        block_hash: decoder.decode_next()?,
+                        transactions: decoder.decode_next()?,
+                    },
+                    withdrawals: decoder.decode_next()?,
+                },
+                blob_gas_used: decoder.decode_next()?,
+                excess_blob_gas: decoder.decode_next()?,
+            },
+            deposit_requests: decoder.decode_next()?,
+            withdrawal_requests: decoder.decode_next()?,
+            consolidation_requests: decoder.decode_next()?,
+        })
+    }
+}
+
+#[cfg(feature = "ssz")]
+impl ssz::Encode for ExecutionPayloadV4 {
+    fn is_ssz_fixed_len() -> bool {
+        false
+    }
+
+    fn ssz_append(&self, buf: &mut Vec<u8>) {
+        let offset = <B256 as ssz::Encode>::ssz_fixed_len() * 5
+            + <Address as ssz::Encode>::ssz_fixed_len()
+            + <Bloom as ssz::Encode>::ssz_fixed_len()
+            + <u64 as ssz::Encode>::ssz_fixed_len() * 6
+            + <U256 as ssz::Encode>::ssz_fixed_len()
+            + ssz::BYTES_PER_LENGTH_OFFSET * 6;
+
+        let mut encoder = ssz::SszEncoder::container(buf, offset);
+
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.parent_hash);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.fee_recipient);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.state_root);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.receipts_root);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.logs_bloom);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.prev_randao);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.block_number);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.gas_limit);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.gas_used);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.timestamp);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.extra_data);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.base_fee_per_gas);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.block_hash);
+        encoder.append(&self.payload_inner.payload_inner.payload_inner.transactions);
+        encoder.append(&self.payload_inner.payload_inner.withdrawals);
+        encoder.append(&self.payload_inner.blob_gas_used);
+        encoder.append(&self.payload_inner.excess_blob_gas);
+        encoder.append(&self.deposit_requests);
+        encoder.append(&self.withdrawal_requests);
+        encoder.append(&self.consolidation_requests);
+
+        encoder.finalize();
+    }
+
+    fn ssz_bytes_len(&self) -> usize {
+        <ExecutionPayloadV3 as ssz::Encode>::ssz_bytes_len(&self.payload_inner)
+            + ssz::BYTES_PER_LENGTH_OFFSET * 3
+            + self.deposit_requests.ssz_bytes_len()
+            + self.withdrawal_requests.ssz_bytes_len()
+            + self.consolidation_requests.ssz_bytes_len()
+    }
+}
+
 /// This includes all bundled blob related data of an executed payload.
 #[derive(Clone, Debug, PartialEq, Eq)]
 #[cfg_attr(feature = "serde", derive(serde::Serialize, serde::Deserialize))]