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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).


NCY Boring Tool (QMB, GY6, Universal) NCY Boring Tool (QMB, GY6, Universal)
10 - 14 Days
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 allows bore of a 54..
$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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