diff --git a/crates/chainspec/src/constants/mod.rs b/crates/chainspec/src/constants.rs
similarity index 87%
rename from crates/chainspec/src/constants/mod.rs
rename to crates/chainspec/src/constants.rs
index cde927189c8b..7026e76ff438 100644
--- a/crates/chainspec/src/constants/mod.rs
+++ b/crates/chainspec/src/constants.rs
@@ -7,6 +7,3 @@ pub(crate) const MAINNET_DEPOSIT_CONTRACT: DepositContract = DepositContract::ne
     11052984,
     b256!("649bbc62d0e31342afea4e5cd82d4049e7e1ee912fc0889aa790803be39038c5"),
 );
-
-#[cfg(feature = "optimism")]
-pub(crate) mod optimism;
diff --git a/crates/chainspec/src/constants/optimism.rs b/crates/chainspec/src/constants/optimism.rs
deleted file mode 100644
index 1c32df6f37ed..000000000000
--- a/crates/chainspec/src/constants/optimism.rs
+++ /dev/null
@@ -1,46 +0,0 @@
-use alloy_eips::eip1559::BaseFeeParams;
-use reth_primitives_traits::constants::{
-    BASE_SEPOLIA_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
-    OP_MAINNET_EIP1559_BASE_FEE_MAX_CHANGE_DENOMINATOR_CANYON,
-    OP_MAINNET_EIP1559_DEFAULT_BASE_FEE_MAX_CHANGE_DENOMINATOR,
-    OP_MAINNET_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
-    OP_SEPOLIA_EIP1559_BASE_FEE_MAX_CHANGE_DENOMINATOR_CANYON,
-    OP_SEPOLIA_EIP1559_DEFAULT_BASE_FEE_MAX_CHANGE_DENOMINATOR,
-    OP_SEPOLIA_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
-};
-
-/// Get the base fee parameters for Base Sepolia.
-pub(crate) const BASE_SEPOLIA_BASE_FEE_PARAMS: BaseFeeParams = BaseFeeParams {
-    max_change_denominator: OP_SEPOLIA_EIP1559_DEFAULT_BASE_FEE_MAX_CHANGE_DENOMINATOR,
-    elasticity_multiplier: BASE_SEPOLIA_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
-};
-
-/// Get the base fee parameters for Base Sepolia (post Canyon).
-pub(crate) const BASE_SEPOLIA_CANYON_BASE_FEE_PARAMS: BaseFeeParams = BaseFeeParams {
-    max_change_denominator: OP_SEPOLIA_EIP1559_BASE_FEE_MAX_CHANGE_DENOMINATOR_CANYON,
-    elasticity_multiplier: BASE_SEPOLIA_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
-};
-
-/// Get the base fee parameters for Optimism Sepolia.
-pub(crate) const OP_SEPOLIA_BASE_FEE_PARAMS: BaseFeeParams = BaseFeeParams {
-    max_change_denominator: OP_SEPOLIA_EIP1559_DEFAULT_BASE_FEE_MAX_CHANGE_DENOMINATOR,
-    elasticity_multiplier: OP_SEPOLIA_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
-};
-
-/// Get the base fee parameters for Optimism Sepolia (post Canyon).
-pub(crate) const OP_SEPOLIA_CANYON_BASE_FEE_PARAMS: BaseFeeParams = BaseFeeParams {
-    max_change_denominator: OP_SEPOLIA_EIP1559_BASE_FEE_MAX_CHANGE_DENOMINATOR_CANYON,
-    elasticity_multiplier: OP_SEPOLIA_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
-};
-
-/// Get the base fee parameters for Optimism Mainnet.
-pub(crate) const OP_BASE_FEE_PARAMS: BaseFeeParams = BaseFeeParams {
-    max_change_denominator: OP_MAINNET_EIP1559_DEFAULT_BASE_FEE_MAX_CHANGE_DENOMINATOR,
-    elasticity_multiplier: OP_MAINNET_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
-};
-
-/// Get the base fee parameters for Optimism Mainnet (post Canyon).
-pub(crate) const OP_CANYON_BASE_FEE_PARAMS: BaseFeeParams = BaseFeeParams {
-    max_change_denominator: OP_MAINNET_EIP1559_BASE_FEE_MAX_CHANGE_DENOMINATOR_CANYON,
-    elasticity_multiplier: OP_MAINNET_EIP1559_DEFAULT_ELASTICITY_MULTIPLIER,
-};
diff --git a/crates/chainspec/src/spec.rs b/crates/chainspec/src/spec.rs
index f557a3d8de31..2fd631fcd898 100644
--- a/crates/chainspec/src/spec.rs
+++ b/crates/chainspec/src/spec.rs
@@ -23,11 +23,6 @@ use reth_trie_common::root::state_root_ref_unhashed;
 #[cfg(feature = "std")]
 use std::sync::Arc;
 
-#[cfg(feature = "optimism")]
-use crate::constants::optimism::{
-    BASE_SEPOLIA_BASE_FEE_PARAMS, BASE_SEPOLIA_CANYON_BASE_FEE_PARAMS, OP_BASE_FEE_PARAMS,
-    OP_CANYON_BASE_FEE_PARAMS, OP_SEPOLIA_BASE_FEE_PARAMS, OP_SEPOLIA_CANYON_BASE_FEE_PARAMS,
-};
 pub use alloy_eips::eip1559::BaseFeeParams;
 #[cfg(feature = "optimism")]
 use reth_ethereum_forks::OptimismHardfork;
@@ -138,8 +133,8 @@ pub static OP_MAINNET: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
         hardforks: OptimismHardfork::op_mainnet(),
         base_fee_params: BaseFeeParamsKind::Variable(
             vec![
-                (EthereumHardfork::London.boxed(), OP_BASE_FEE_PARAMS),
-                (OptimismHardfork::Canyon.boxed(), OP_CANYON_BASE_FEE_PARAMS),
+                (EthereumHardfork::London.boxed(), BaseFeeParams::optimism()),
+                (OptimismHardfork::Canyon.boxed(), BaseFeeParams::optimism_canyon()),
             ]
             .into(),
         ),
@@ -163,8 +158,8 @@ pub static OP_SEPOLIA: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
         hardforks: OptimismHardfork::op_sepolia(),
         base_fee_params: BaseFeeParamsKind::Variable(
             vec![
-                (EthereumHardfork::London.boxed(), OP_SEPOLIA_BASE_FEE_PARAMS),
-                (OptimismHardfork::Canyon.boxed(), OP_SEPOLIA_CANYON_BASE_FEE_PARAMS),
+                (EthereumHardfork::London.boxed(), BaseFeeParams::optimism_sepolia()),
+                (OptimismHardfork::Canyon.boxed(), BaseFeeParams::optimism_sepolia_canyon()),
             ]
             .into(),
         ),
@@ -188,8 +183,8 @@ pub static BASE_SEPOLIA: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
         hardforks: OptimismHardfork::base_sepolia(),
         base_fee_params: BaseFeeParamsKind::Variable(
             vec![
-                (EthereumHardfork::London.boxed(), BASE_SEPOLIA_BASE_FEE_PARAMS),
-                (OptimismHardfork::Canyon.boxed(), BASE_SEPOLIA_CANYON_BASE_FEE_PARAMS),
+                (EthereumHardfork::London.boxed(), BaseFeeParams::base_sepolia()),
+                (OptimismHardfork::Canyon.boxed(), BaseFeeParams::base_sepolia_canyon()),
             ]
             .into(),
         ),
@@ -213,8 +208,8 @@ pub static BASE_MAINNET: Lazy<Arc<ChainSpec>> = Lazy::new(|| {
         hardforks: OptimismHardfork::base_mainnet(),
         base_fee_params: BaseFeeParamsKind::Variable(
             vec![
-                (EthereumHardfork::London.boxed(), OP_BASE_FEE_PARAMS),
-                (OptimismHardfork::Canyon.boxed(), OP_CANYON_BASE_FEE_PARAMS),
+                (EthereumHardfork::London.boxed(), BaseFeeParams::optimism()),
+                (OptimismHardfork::Canyon.boxed(), BaseFeeParams::optimism()),
             ]
             .into(),
         ),