diff --git a/op-node/chaincfg/chains.go b/op-node/chaincfg/chains.go
index 0b01558f4f2c6..06a46c13f12d1 100644
--- a/op-node/chaincfg/chains.go
+++ b/op-node/chaincfg/chains.go
@@ -291,76 +291,6 @@ var ComboTestnet = rollup.Config{
 	EcotoneTime:            u64Ptr(1719210600), // June-24-2024 06:30 AM +UTC
 }
 
-var ComboMainnet = rollup.Config{
-	Genesis: rollup.Genesis{
-		L1: eth.BlockID{
-			Hash:   common.HexToHash("0x7743484e78e047654f5a92c5d66a25828f1c259b2c9a780a39936c001fdcbcf7"),
-			Number: 33768568,
-		},
-		L2: eth.BlockID{
-			Hash:   common.HexToHash("0x92fcf9e91a4cdd7ffc7e67207e77dfba049bacf1ede5c5917a40f9537e05f4bc"),
-			Number: 0,
-		},
-		L2Time: 1700817067,
-		SystemConfig: eth.SystemConfig{
-			BatcherAddr: common.HexToAddress("0x6df30535bbe94a533d9f1600e69a642abb3e063f"),
-			Overhead:    eth.Bytes32(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000834")),
-			Scalar:      eth.Bytes32(common.HexToHash("0x00000000000000000000000000000000000000000000000000000000000f4240")),
-			GasLimit:    100000000,
-		},
-	},
-	BlockTime:              1,
-	MaxSequencerDrift:      600,
-	SeqWindowSize:          14400,
-	ChannelTimeout:         1200,
-	L1ChainID:              big.NewInt(56),
-	L2ChainID:              big.NewInt(9980),
-	BatchInboxAddress:      common.HexToAddress("0xff00000000000000000000000000000000009980"),
-	DepositContractAddress: common.HexToAddress("0x419df125e0a712db4b10209ac3055b58b840f1f4"),
-	L1SystemConfigAddress:  common.HexToAddress("0x19d9791f6f5df45fb4ced2ea0904e48a6f9e545c"),
-	RegolithTime:           u64Ptr(0),
-	Fermat:                 big.NewInt(0),
-	SnowTime:               u64Ptr(1719813600), // July-01-2024 06:00 AM +UTC
-	CanyonTime:             u64Ptr(1719814200), // July-01-2024 06:10 AM +UTC
-	DeltaTime:              u64Ptr(1719814800), // July-01-2024 06:20 AM +UTC
-	EcotoneTime:            u64Ptr(1719815400), // July-01-2024 06:30 AM +UTC
-}
-
-var ComboTestnet = rollup.Config{
-	Genesis: rollup.Genesis{
-		L1: eth.BlockID{
-			Hash:   common.HexToHash("0x5c42e35d2cf086cdbf6ad194701a48688f3c1e8d2eecf57168a248e63a33be86"),
-			Number: 39570635,
-		},
-		L2: eth.BlockID{
-			Hash:   common.HexToHash("0x51d565869cb1c6d7e577848ccd1f93918b99427c1cc3fed9dca628d0cffcefbb"),
-			Number: 0,
-		},
-		L2Time: 1713424951,
-		SystemConfig: eth.SystemConfig{
-			BatcherAddr: common.HexToAddress("0x013fce36695321d32251e58bff33292c685da696"),
-			Overhead:    eth.Bytes32(common.HexToHash("0x0000000000000000000000000000000000000000000000000000000000000834")),
-			Scalar:      eth.Bytes32(common.HexToHash("0x00000000000000000000000000000000000000000000000000000000000f4240")),
-			GasLimit:    100000000,
-		},
-	},
-	BlockTime:              1,
-	MaxSequencerDrift:      600,
-	SeqWindowSize:          14400,
-	ChannelTimeout:         1200,
-	L1ChainID:              big.NewInt(97),
-	L2ChainID:              big.NewInt(1715),
-	BatchInboxAddress:      common.HexToAddress("0xff00000000000000000000000000000000001715"),
-	DepositContractAddress: common.HexToAddress("0x6357aeea63f9bea16a9264fad26fdfddbec559e6"),
-	L1SystemConfigAddress:  common.HexToAddress("0x3a472819b60885f1f11ee173f56e43961460c391"),
-	RegolithTime:           u64Ptr(0),
-	Fermat:                 big.NewInt(0),
-	SnowTime:               u64Ptr(1719208800), // June-24-2024 06:00 AM +UTC
-	CanyonTime:             u64Ptr(1719209400), // June-24-2024 06:10 AM +UTC
-	DeltaTime:              u64Ptr(1719210000), // June-24-2024 06:20 AM +UTC
-	EcotoneTime:            u64Ptr(1719210600), // June-24-2024 06:30 AM +UTC
-}
-
 func u64Ptr(v uint64) *uint64 {
 	return &v
 }