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Bore Tools

Scooter Engine Case Boring Tool. Installing a cylinder kit larger than it factory bore size requires the factory crankcase to be machined. That is why we offer crankcase boring tool which allow a bore-cut to fit cylinder bigger sizes 52mm 100cc, 61mm for 171cc, 63mm for 180cc or even 67mm 232cc with replacement extended stroker on your 57mm stud GY6 engine (crankcase).


Brand: NCY Model: 1400-1001
Description: Engine bore tool by NCY. A must for using most large bore cylinder kits. IMPROVED DESIGN!! Now works with multiple engine designs! Installing a GY6 cylinder kit larger than 61mm requires the factory crankcase to be machined. That is why we offer NCY Boring Tool which allow a bore Crankc..
$146.00
Brand: NCY Model: 1400-1081
Description: Engine bore tool blade by NCY. A must for using most large bore cylinder kits. Replacement blade for the NCY Big Bore Tool (Part# 1400-1001).Specifications:Include the following Bore tool blade ONLY.•    Bore Bit (blade)•    Fit 50mm Stud Spacing /Diagonal ..
$24.65
Brand: SSP-G Model: 202-37
Description: A must for using most large bore cylinder kits beyond factory, especially installing a GY6 cylinder kit larger than 61mm requires the factory crankcase to be machined. That is why we offer SSP-G Engine Case Boring Tool which allows a bore-cut to fit cylinder size 61mm for 171cc, 63..
$142.00
Brand: Taida Model: GY6-TOOL-54
Description: Installing a cylinder kit larger than 61mm requires the factory crankcase to be machined. That is why we offer Taida Boring Tool which allows bore-cut “A” crankcase to fit cylinder size 61mm for 171cc, 63mm for 180cc or even 205cc with extended stroker on “A” standard 54mm stud GY6 engi..
$174.27
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