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Tight manufacturing tolerances prevent leaks, while a two-year warranty provides peace of mind on every trip.\u003c\/p\u003e\n\u003cp data-start=\"797\" data-end=\"814\"\u003e\u003cstrong data-start=\"797\" data-end=\"814\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"815\" data-end=\"1100\"\u003e\n\u003cli data-start=\"815\" data-end=\"842\"\u003e\n\u003cp data-start=\"817\" data-end=\"842\"\u003eBore Size: 3\/4\" (19.05mm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"843\" data-end=\"885\"\u003e\n\u003cp data-start=\"845\" data-end=\"885\"\u003eSuitable for single braked axle trailers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"886\" data-end=\"940\"\u003e\n\u003cp data-start=\"888\" data-end=\"940\"\u003eSuperior quality materials for extended service life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"941\" data-end=\"994\"\u003e\n\u003cp data-start=\"943\" data-end=\"994\"\u003eOptimised cylinder surfacing minimises cup abrasion\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"995\" data-end=\"1065\"\u003e\n\u003cp data-start=\"997\" data-end=\"1065\"\u003eTight tolerance specs ensure proper function and leak-free operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1066\" data-end=\"1100\"\u003e\n\u003cp data-start=\"1068\" data-end=\"1100\"\u003eTwo-year manufacturer’s warranty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1102\" data-end=\"1197\"\u003e\u003cstrong data-start=\"1102\" data-end=\"1112\"\u003eBrand:\u003c\/strong\u003e Kelpro\u003cbr data-start=\"1119\" data-end=\"1122\"\u003e\u003cstrong data-start=\"1122\" data-end=\"1135\"\u003ePart No.:\u003c\/strong\u003e KCM4977\u003cbr data-start=\"1143\" data-end=\"1146\"\u003e\u003cstrong data-start=\"1146\" data-end=\"1155\"\u003eType:\u003c\/strong\u003e Master Cylinder\u003cbr data-start=\"1171\" data-end=\"1174\"\u003e\u003cstrong data-start=\"1174\" data-end=\"1187\"\u003eWarranty:\u003c\/strong\u003e Two Years\u003c\/p\u003e\n\u003cp data-start=\"1318\" data-end=\"1345\"\u003e\u003cstrong data-start=\"1318\" data-end=\"1343\"\u003eOEM Cross References:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1346\" data-end=\"1387\"\u003e\n\u003cli data-start=\"1346\" data-end=\"1372\"\u003e\n\u003cp data-start=\"1348\" data-end=\"1372\"\u003eTrojan\/Girling PT10391\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","published_at":"2023-04-05T16:26:56+12:00","created_at":"2023-04-05T16:26:56+12:00","vendor":"Kelpro","type":"Brake Master Cylinder","tags":["Categories - Trailer Parts","Hydraulics \u0026 Braking"],"price":4220,"price_min":4220,"price_max":4220,"available":true,"price_varies":false,"compare_at_price":7300,"compare_at_price_min":7300,"compare_at_price_max":7300,"compare_at_price_varies":false,"variants":[{"id":43863868866804,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":"NP-KCM4977","requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Kelpro Trailer Brake Master Cylinder 19.05mm (3\/4\") – KCM4977","public_title":null,"options":["Default Title"],"price":4220,"weight":0,"compare_at_price":7300,"inventory_quantity":0,"inventory_management":"shopify","inventory_policy":"continue","barcode":"","requires_selling_plan":false,"selling_plan_allocations":[]}],"images":["\/\/sesdirect.co.nz\/cdn\/shop\/products\/ImageCache_3_23a719ea-0f7f-45fa-bd30-5c1ca4feac59.jpg?v=1687940845","\/\/sesdirect.co.nz\/cdn\/shop\/files\/74d3d090-f6de-4c8f-8098-1eef7f2c91d81A6113302_1.jpg?v=1753306754"],"featured_image":"\/\/sesdirect.co.nz\/cdn\/shop\/products\/ImageCache_3_23a719ea-0f7f-45fa-bd30-5c1ca4feac59.jpg?v=1687940845","options":["Title"],"media":[{"alt":"Kelpro Trailer Brake Master Cylinder 19.05Mm 3\/4\" - SES Direct Ltd","id":31955057508596,"position":1,"preview_image":{"aspect_ratio":1.0,"height":453,"width":453,"src":"\/\/sesdirect.co.nz\/cdn\/shop\/products\/ImageCache_3_23a719ea-0f7f-45fa-bd30-5c1ca4feac59.jpg?v=1687940845"},"aspect_ratio":1.0,"height":453,"media_type":"image","src":"\/\/sesdirect.co.nz\/cdn\/shop\/products\/ImageCache_3_23a719ea-0f7f-45fa-bd30-5c1ca4feac59.jpg?v=1687940845","width":453},{"alt":"Kelpro Trailer Brake Master Cylinder 19.05mm (3\/4\") – KCM4977 - SES Direct Ltd","id":39509863235828,"position":2,"preview_image":{"aspect_ratio":1.0,"height":453,"width":453,"src":"\/\/sesdirect.co.nz\/cdn\/shop\/files\/74d3d090-f6de-4c8f-8098-1eef7f2c91d81A6113302_1.jpg?v=1753306754"},"aspect_ratio":1.0,"height":453,"media_type":"image","src":"\/\/sesdirect.co.nz\/cdn\/shop\/files\/74d3d090-f6de-4c8f-8098-1eef7f2c91d81A6113302_1.jpg?v=1753306754","width":453}],"requires_selling_plan":false,"selling_plan_groups":[],"content":"\u003cp data-start=\"307\" data-end=\"795\"\u003eUpgrade your trailer’s braking performance with the Kelpro KCM4977 Master Cylinder. Designed for trailers with a single braked axle, this high-quality 19.05mm (3\/4\") master cylinder offers reliable stopping power and long-lasting performance. Engineered from superior materials, it features optimised cylinder surfacing to reduce cup abrasion and ensure years of dependable use. Tight manufacturing tolerances prevent leaks, while a two-year warranty provides peace of mind on every trip.\u003c\/p\u003e\n\u003cp data-start=\"797\" data-end=\"814\"\u003e\u003cstrong data-start=\"797\" data-end=\"814\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"815\" data-end=\"1100\"\u003e\n\u003cli data-start=\"815\" data-end=\"842\"\u003e\n\u003cp data-start=\"817\" data-end=\"842\"\u003eBore Size: 3\/4\" (19.05mm)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"843\" data-end=\"885\"\u003e\n\u003cp data-start=\"845\" data-end=\"885\"\u003eSuitable for single braked axle trailers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"886\" data-end=\"940\"\u003e\n\u003cp data-start=\"888\" data-end=\"940\"\u003eSuperior quality materials for extended service life\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"941\" data-end=\"994\"\u003e\n\u003cp data-start=\"943\" data-end=\"994\"\u003eOptimised cylinder surfacing minimises cup abrasion\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"995\" data-end=\"1065\"\u003e\n\u003cp data-start=\"997\" data-end=\"1065\"\u003eTight tolerance specs ensure proper function and leak-free operation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1066\" data-end=\"1100\"\u003e\n\u003cp data-start=\"1068\" data-end=\"1100\"\u003eTwo-year manufacturer’s warranty\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1102\" data-end=\"1197\"\u003e\u003cstrong data-start=\"1102\" data-end=\"1112\"\u003eBrand:\u003c\/strong\u003e Kelpro\u003cbr data-start=\"1119\" data-end=\"1122\"\u003e\u003cstrong data-start=\"1122\" data-end=\"1135\"\u003ePart No.:\u003c\/strong\u003e KCM4977\u003cbr data-start=\"1143\" data-end=\"1146\"\u003e\u003cstrong data-start=\"1146\" data-end=\"1155\"\u003eType:\u003c\/strong\u003e Master Cylinder\u003cbr data-start=\"1171\" data-end=\"1174\"\u003e\u003cstrong data-start=\"1174\" data-end=\"1187\"\u003eWarranty:\u003c\/strong\u003e Two Years\u003c\/p\u003e\n\u003cp data-start=\"1318\" data-end=\"1345\"\u003e\u003cstrong data-start=\"1318\" data-end=\"1343\"\u003eOEM Cross References:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1346\" data-end=\"1387\"\u003e\n\u003cli data-start=\"1346\" data-end=\"1372\"\u003e\n\u003cp data-start=\"1348\" data-end=\"1372\"\u003eTrojan\/Girling PT10391\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e"}

Kelpro Trailer Brake Master Cylinder 19.05mm (3/4") – KCM4977

Product Description
Estimated Dispatch 1-2 Business Days
$42.20 $73.00
Maximum quantity available reached.

Upgrade your trailer’s braking performance with the Kelpro KCM4977 Master Cylinder. Designed for trailers with a single braked axle, this high-quality 19.05mm (3/4") master cylinder offers reliable stopping power and long-lasting performance. Engineered from superior materials, it features optimised cylinder surfacing to reduce cup abrasion and ensure years of dependable use. Tight manufacturing tolerances prevent leaks, while a two-year warranty provides peace of mind on every trip.

Key Features:

  • Bore Size: 3/4" (19.05mm)

  • Suitable for single braked axle trailers

  • Superior quality materials for extended service life

  • Optimised cylinder surfacing minimises cup abrasion

  • Tight tolerance specs ensure proper function and leak-free operation

  • Two-year manufacturer’s warranty

Brand: Kelpro
Part No.: KCM4977
Type: Master Cylinder
Warranty: Two Years

OEM Cross References:

  • Trojan/Girling PT10391

Sku: NP-KCM4977
Vendor: Kelpro

Shipping Information

Flat Rate Shipping New Zealand Wide:

  • Urban Delivery: $7.95 for all orders under 30kg
  • Rural Delivery: $10.95 for all orders under 30kg
  • Heavy Items (over 30kg): $19.95 to any Mainstream Depot or non-rural address NZ-wide

We stock thousands of items in-house and utilize a network of suppliers across New Zealand to ensure quick access to a wide range of parts. Orders for in-stock items are typically dispatched on an overnight service nationwide. However, please allow an additional 1-2 days for large or oversized orders due to shipping constraints.

If you need any clarification on shipping times or availability, feel free to contact us!

Please note we do not take liability for the accuracy of photos as we go by part numbers not photos.

Returns Policy

At SES Direct, our goal is to get your gear up and running as quickly as possible. If you've ordered the wrong part, we’re here to help and will do our best to sort things out for you.

Return Eligibility:

  • Our return policy is valid for 14 working days from the delivery date of your order. Unfortunately, if 14 working days have passed, we cannot offer a refund or exchange.
  • To be eligible for a return, the item must be unused, in the same condition as when you received it, and in its original packaging.
  • Please note we do not take liability for the accuracy of photos as we go by part numbers not photos. 

Return Process:

  • Before returning any item, please contact us to receive a return number, which must accompany your returned goods. This will be supplied via email.
  • Return shipping costs are the customer’s responsibility.
  • Electrical items are only credited at our discretion.
  • A restocking fee of 20% or $15.00 (whichever is greater) applies to common items we stock.
  • For ‘indent’ parts (special orders made just for you), a minimum 25% restocking fee applies.
  • Some specialist or ‘one-off’ items may not be eligible for return if they cannot be sent back to our suppliers.

Freight Credit:
We will only credit freight costs if we sent the incorrect part by mistake.

If you're unsure about a product or need clarification on our returns policy, please contact us before placing your order. We're happy to help! You can reach us at 0800 296 586.