1. Baseball
  2. Bats
  3. 31.5OZ

31.5 oz Baseball Bats

Shop by Bat Certification

38 Results
Shop by Category

Resell & Save Even More

Earn hundreds when you list your gear for sale, or trade-in and drop off at a local partner.

List Your GearTry Trade-in
2026 DeMarini The Goods Hybrid BBCOR Certified Bat (-3) 31.5 oz 34.5" (New)
Rb_Bats
2026 DeMarini The Goods Hybrid BBCOR Certified Bat (-3) 31.5 oz 34.5" (New)
$325
34 inch M243 EXIS Maple Composite Wood Bat (-2.5) 6 Mo. Warranty BBCOR.50
NWIBLSideline Pro+
34 inch M243 EXIS Maple Composite Wood Bat (-2.5) 6 Mo. Warranty BBCOR.50
$169
Retail price: $239
New KR3 C271 Maple Magnum 34 inch Wood Bat (-3) 31.5 oz 6 Month Warranty
NWIBLSideline Pro+
New KR3 C271 Maple Magnum 34 inch Wood Bat (-3) 31.5 oz 6 Month Warranty
$229
Retail price: $279
Katana Euro Beech 34 inch Wood Bat (-3) 31.5 oz B243
NWIBLSideline Pro+
Katana Euro Beech 34 inch Wood Bat (-3) 31.5 oz B243
$159
Retail price: $189
KR3 PRO 243 Ultra Eagle Magnum 34 inch Composite Wood Bat (-3) 31.5 oz C243
NWIBLSideline Pro+
KR3 PRO 243 Ultra Eagle Magnum 34 inch Composite Wood Bat (-3) 31.5 oz C243
$225
Retail price: $249
KR3 PRO RC22 Ultra Eagle Magnum 34 inch composite Wood Bat (-3) 31 oz RC22
NWIBLSideline Pro+
KR3 PRO RC22 Ultra Eagle Magnum 34 inch composite Wood Bat (-3) 31 oz RC22
$225
Retail price: $249
New 2025 Katana i13 Euro Beech 34 inch Wood Bat (-3) 30.5 oz
NWIBLSideline Pro+
New 2025 Katana i13 Euro Beech 34 inch Wood Bat (-3) 30.5 oz
$159
Retail price: $179
New KR3 PRO 243 Eagle Magnum 34 inch Wood Bat características de El modelo Eagle Magnum C24
NWIBLSideline Pro+
New KR3 PRO 243 Eagle Magnum 34 inch Wood Bat características de El modelo Eagle Magnum C24
$189
Retail price: $230
New KR3 Eagle Maple Magnum C271 34 inch Wood Bat (-3) 30.5 oz
NWIBLSideline Pro+
New KR3 Eagle Maple Magnum C271 34 inch Wood Bat (-3) 30.5 oz
$189
Retail price: $230
New KR3 PRO i13 Eagle Magnum Wood 34 inch Composite Wood Bat (-3) 29.5 oz
NWIBLSideline Pro+
New KR3 PRO i13 Eagle Magnum Wood 34 inch Composite Wood Bat (-3) 29.5 oz
$189
Retail price: $219
Tater Pro Issue Dominican Republic 33.5 Maple bat
ElTigre
Tater Pro Issue Dominican Republic 33.5 Maple bat
$113$12510% OFF
10% PRICE DROP
Great White Woodworks 31.5 oz 33.5" (Used)
magicmicah
Great White Woodworks 31.5 oz 33.5" (Used)
$100
New KR3 PRO Extra Large Knob FULCRUM M332 Bat 34 inch Maple Wood Bat (-3) 31.5 oz
NWIBLSideline Pro+
New KR3 PRO Extra Large Knob FULCRUM M332 Bat 34 inch Maple Wood Bat (-3) 31.5 oz
$159
Retail price: $199
New KR3 PRO Maple Woodsman AX Bat 34 inch Wood Bat (-3) 31.5 oz
NWIBLSideline Pro+
New KR3 PRO Maple Woodsman AX Bat 34 inch Wood Bat (-3) 31.5 oz
$159
Retail price: $199
2021 Demarini The Goods 34.5/31.5 (-3) BBCOR Baseball Bat
dylanjohSideline Pro
2021 Demarini The Goods 34.5/31.5 (-3) BBCOR Baseball Bat
$400
2018 Marucci F5 Alloy BBCOR Certified Bat (-3) 31.5 oz 34" (Used)
Joelf2ss
2018 Marucci F5 Alloy BBCOR Certified Bat (-3) 31.5 oz 34" (Used)
$35$5030% OFF
30% PRICE DROP
Retail price: $45
New C243XL KR3 Maple Magnum 34 inch Composite Wood Bat (-3) 30.5 oz C243XL 6 Month Warranty
NWIBLSideline Pro+
New C243XL KR3 Maple Magnum 34 inch Composite Wood Bat (-3) 30.5 oz C243XL 6 Month Warranty
$259
Retail price: $289
Louisville Slugger Wood Bat with 1999 World Series Logo
L_and_M
Louisville Slugger Wood Bat with 1999 World Series Logo
$50
Handmade Bat (-3) 31.5 oz 33.5" (Used)
DDrew554
Handmade Bat (-3) 31.5 oz 33.5" (Used)
$75
Handmade Bat (-3) 31.5 oz 35.5" (Used)
DDrew554
Handmade Bat (-3) 31.5 oz 35.5" (Used)
$75
DeMarini The Goods Hybrid (2 5/8") BBCOR Bat 2026 (-3)
sportsxchangeSideline Pro+
DeMarini The Goods Hybrid (2 5/8") BBCOR Bat 2026 (-3)
$200
Retail price: $350
2025 Hakusoh H400 Maple Bat (-3) 31.5 oz 34" (New)
Randeezy03
2025 Hakusoh H400 Maple Bat (-3) 31.5 oz 34" (New)
$122
Retail price: $180
KR3 PRO I13 Torpedo Gold Series Bat High Density Maple 33.5 inch Wood Bat (-3) 30.5 oz
NWIBLSideline Pro+
KR3 PRO I13 Torpedo Gold Series Bat High Density Maple 33.5 inch Wood Bat (-3) 30.5 oz
$196
Retail price: $245
B45 Premium B110 Yellow Birch 33.5”
woodycc
B45 Premium B110 Yellow Birch 33.5”
$145
Retail price: $190
Used Marucci Alloy CAT 8 Bat (-3) 31.5 oz 33.5"
Ballplayer82036
Used Marucci Alloy CAT 8 Bat (-3) 31.5 oz 33.5"
$90$10010% OFF
36% PRICE DROP
2024 Training Bat Wood 31.5 oz 33.5" (Used). Player Issued Pro Ball
CarlyleS1
2024 Training Bat Wood 31.5 oz 33.5" (Used). Player Issued Pro Ball
$170
Sam Bat AG24 34/31
wiley19
Sam Bat AG24 34/31
$125
Max Bat WM9 Pro Maple Wood 33.5
Tcraig3
Max Bat WM9 Pro Maple Wood 33.5
$108
(READ DESCRIPTION FIRST) Sam Bat Pro Maple Bat 31.5 oz 33.5" Selling Individually
Ramrod911
(READ DESCRIPTION FIRST) Sam Bat Pro Maple Bat 31.5 oz 33.5" Selling Individually
$120
Retail price: $140
2025 Louisville Slugger Atlas Alloy BBCOR Certified Bat (-3) 31.5 oz 33.5" (Used)
Tybaci27
2025 Louisville Slugger Atlas Alloy BBCOR Certified Bat (-3) 31.5 oz 33.5" (Used)
$140
DeMarini BBCOR Certified (-3) 31.5 oz 34.5" (Used) The Goods Bat
Ramrod911
DeMarini BBCOR Certified (-3) 31.5 oz 34.5" (Used) The Goods Bat
$275
Retail price: $450