Top 6 XR70 Big Bore Kit – Powersports Engine Kits

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1. 50 Caliber Racing

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50 Caliber Racing 88cc stage 2 big bore kit for honda xr70 and crf 70

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50 Caliber Racing #ad - Head gasket kit, all gasket included needed for install. Lightweight aluminum cylinder with steel sleeve. High compression 52mm piston with rings, pin, & clips.
Brand50 Caliber Racing #ad
Manufacturer50 Caliber Racing #ad
Weight6 Pounds
Part Number88cc Big Bore kit [4447A1]

2. Autoslegend

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Cylinder Piston Kit for Honda CRF70 XR70 CT70 C70 ATC70 TRX70 S65 50cc Large Bore/70cc Small Bore

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Autoslegend #ad - Fit for honda s65 / trx70 / ATC70 Fit for honda ct70 1969-1994 / xr70r 1997-2003. Outer bore size: 47mm ; Inner Bore Size: 39mm. Fit for honda crf70f 2004-2009 / 2011-2012. Fit for honda c70 1980-1983 / 1971-1972.
BrandAutoslegend #ad
ManufacturerAutoslegend #ad
Part NumberKH77

3. Anxingo

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PISTON RINGS KIT for HONDA 70CC CRF70F XL70 XR70 C70 CT70 ATC70 CL70 SL70 STD PISTON BORE

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Anxingo #ad - Fits for honda 70cc crf70f xl70 xr70 c70 ct70 atc70 cl70 SL70 Package includes: 1 x Piston & Rings Set as pictured. Suitable for honda 70cc dirt bike, Pit Bike, Mini Trail, Quads, ATV, Trikes. High quality products with competitive price, fast delivery and good service, free shipping and shipped from USA warehouse. Pls check the following product description for detailed fitments.
BrandAnxingo #ad
ManufacturerAnxingo #ad
Part NumberHONDA 70CC CRF70F XL70 XR70 C70 CT70

4. Tuningsworld

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Cylinder Piston Kits for Honda CRF70 XR70 CT70 C70 ATC70 TRX70 S65 50cc Large Bore / 70cc Small Bore

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Tuningsworld #ad - Note:this head can be used on either a 50cc or 70cc engine. Fit for honda s65, for Honda TRX70 Fit for honda crf70f 2004-2009, for honda crf70f 2011-2012, for honda ct70 1969-1994, for Honda XR70R 1997-2003. Fit for honda atc70 1978-1985, for honda c70 1980-1983, for Honda C70 1971-1972. But please note that it is for Domed 50cc or Flat Top 70cc. Outer bore size: 47mm ; Inner Bore Size: 39mm.
BrandTuningsworld #ad
ManufacturerTuningsworld #ad
Part NumberOA46

5. BBR Motorsports

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BBR Motorsports 150cc Big Bore Kit with Cam 411-YTR-1201

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BBR Motorsports #ad - Bores into stock cylinder. Kit includes: aluminum bbr cylinder, piston pin, rings, clips, piston, performance camshaft and gasket kit.
BrandBBR Motorsports #ad
ManufacturerBBR Motorsports #ad
Height4.6 Inches
Length10.3 Inches
Weight4.7 Pounds
Width6.2 Inches
Part Number0903-0119
Model0903-0119

6. BBR Motorsports

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BBR Motorsports 88CC Bore Kit W/ CAM for Honda CRF50F XR50R

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BBR Motorsports #ad - Complete top end gasket set. Performance manifold and airfilter. Bbr aluminum cylinder. 52mm flat-top piston, pin, rings, clips. Exclusive BBR motocross-grind.
BrandBBR Motorsports #ad
ManufacturerBBR #ad
Height4.5 Inches
Length9 Inches
Weight2.8 Pounds
Width6.3 Inches
Part Number411-HXR-5500