[{"id":216806949016,"handle":"frontpage","updated_at":"2026-06-04T21:05:45+10:00","published_at":"2020-08-26T00:51:00+10:00","sort_order":"best-selling","template_suffix":"","published_scope":"global","title":"All Products","body_html":"\u003cp\u003eBrowse all minibike parts and accessories including suspension, engine parts, controls and protection. Suits CRF110, KLX110, TTR110 and more. Same day dispatch from Australia. Shipping worldwide.\u003cscript type=\"application\/ld+json\"\u003e\n{\n\"@context\": \"https:\/\/schema.org\",\n\"@type\": \"BreadcrumbList\",\n \"itemListElement\": [{\n \"@type\": \"ListItem\",\n\"position\": 0,\n\"item\": {\n\"name\": \"Home\",\n\"id\": \"https:\/\/ozminis.com.au\/\"\n}\n },{\n\"@type\": \"ListItem\",\n\"position\": 1,\n\"name\": \"All Products\",\n\"item\": \"https:\/\/ozminis.com.au\/collections\/frontpage\"\n}]\n}\n\u003c\/script\u003e\u003c\/p\u003e","image":{"created_at":"2020-09-01T15:59:38+10:00","alt":null,"width":1616,"height":1080,"src":"\/\/www.ozminis.com.au\/cdn\/shop\/collections\/117533294_223140199090251_8234240630543296055_n.jpg?v=1598939979"}},{"id":323700457624,"handle":"big-bore-kits","title":"Big Bore Kits","updated_at":"2026-06-04T17:29:24+10:00","body_html":"\u003cp\u003eShop big bore kits for CRF110F | TTR110 | KLX110\/L, along with a wide range of other pitbike models. Increase engine capacity, power and overall performance. Same day dispatch from Australia. Shipping worldwide.\u003c\/p\u003e","published_at":"2025-07-15T17:07:35+10:00","sort_order":"best-selling","template_suffix":"","disjunctive":false,"rules":[{"column":"type","relation":"equals","condition":"Big Bore Kit"}],"published_scope":"global"},{"id":288354664600,"handle":"crf125","title":"CRF125F","updated_at":"2026-06-04T21:05:45+10:00","body_html":"","published_at":"2023-03-28T15:27:25+11:00","sort_order":"best-selling","template_suffix":"","disjunctive":true,"rules":[{"column":"tag","relation":"equals","condition":"crf125"},{"column":"title","relation":"contains","condition":"crf125"},{"column":"title","relation":"contains","condition":"CRF125F"}],"published_scope":"global"},{"id":288203800728,"handle":"honda","title":"Honda","updated_at":"2026-06-04T21:05:45+10:00","body_html":"\u003cp\u003eShop Honda minibike parts and upgrades including suspension, engine parts, controls and protection. Suits CRF110, CRF125, CRF50 and more. Fast shipping Australia-wide.\u003c\/p\u003e","published_at":"2023-03-10T09:18:01+11:00","sort_order":"best-selling","template_suffix":"","disjunctive":true,"rules":[{"column":"title","relation":"contains","condition":"CRF"}],"published_scope":"global"},{"id":298804576408,"handle":"new-arrivals","title":"New Arrivals","updated_at":"2026-06-04T21:05:45+10:00","body_html":"\u003cp\u003eCheck out the latest minibike parts just landed at Ozminis. New upgrades, restocks and fresh gear for CRF110, KLX110, TTR110 and more. If it’s new, it’s here.\u003c\/p\u003e","published_at":"2024-02-21T16:38:47+11:00","sort_order":"manual","template_suffix":"","disjunctive":false,"rules":[{"column":"variant_price","relation":"greater_than","condition":"0"}],"published_scope":"global"},{"id":288196559000,"handle":"performance","title":"Performance","updated_at":"2026-06-04T14:15:25+10:00","body_html":"","published_at":"2023-03-09T16:26:12+11:00","sort_order":"manual","template_suffix":"","disjunctive":true,"rules":[{"column":"type","relation":"equals","condition":"Performance"},{"column":"type","relation":"equals","condition":"Big Bore Kit"}],"published_scope":"global"},{"id":323699867800,"handle":"power-upgrades-hp","title":"Power Upgrades (+HP)","updated_at":"2026-06-04T17:29:31+10:00","body_html":"","published_at":"2025-07-15T16:47:04+10:00","sort_order":"manual","template_suffix":"","disjunctive":true,"rules":[{"column":"type","relation":"equals","condition":"Power Upgrades"},{"column":"type","relation":"equals","condition":"Big Bore Kit"},{"column":"type","relation":"equals","condition":"Performance"},{"column":"type","relation":"equals","condition":"Power Package"}],"published_scope":"global"}]
TBparts 138cc big bore kit for the Honda CRF125. This will make your trail bike a lot more fun to ride by adding some much needed power. With the larger bore, this bolt-on upgrade kit will give you more power and higher compression for a very reasonable price. This kit does not require boring of the case – simply bolt on, tune (Not included) and go!! This is an ideal option if you’re looking to add some power or you just need a new cylinder, piston, and rings to rebuild your engine.
Key features:
High quality, high compression 55mm piston, with rings, pin, & clips
11.0:1 compression ratio compared to Stock 9.0:1. Our piston ispump 91+ octane gas friendly.
Aluminum cylinder with steel sleeve (55mm)
Head gasket kit with exhaust gasket!
Largest bore you can go without boring the cases
More power and fun at an affordable price
Easy bolt-on kit
+2.6mm of bore or 13cc
There are no installation instructions, but if you can replace your piston, you can install this kit. If you don’t have any experience working on your engine, we highly recommend having a professional technician install this kit or, at a minimum, purchasing the shop manual for your bike. We also have a link on our website in the INFO section under Honda where you can find additional info. The parts are installed in the same manner as the OEM parts.
Notes:
Fuel Injected models – Tuning Requiredthe ECU will require a flash/tune to prevent a lean condition and possible damage to your engine. CJR Performance (cameronjonesracing.com) provides this service and can also adjust the tune based on your other modifications.
