Rio's Rock Grinder – Trout Creek Outfitters

Book a Guided Trip!

Rio's Rock Grinder

Rio's Rock Grinder

Rio's Rock Grinder

Rio's Rock Grinder

Rio's Rock Grinder

Rio's Rock Grinder

Rio's Rock Grinder

Rio's Rock Grinder

$2.99

Color

Olive

Chartreuse

Orange

Black

Hook Size

12

14

16

RIO's Rock Grinder is designed to sink very fast and be a nice mix of buggy-ness and attraction. This euro nymph has a hot tag of floss and a CDC collar that both wave enticingly In the current The matte black tungsten bead and PT colored body help it look like the insects of the deep.

The following are the bead sizes per hook:

Size 12 - 3.8 mm
Size 14 - 3.3 mm
Size 16 - 2.8 mm

Free shipping on all orders over $100

In stock, ready to ship
Backordered, shipping soon

We want you to love your purchase! Online orders can be returned within 30 business days for a full refund or store credit. Items must be unused and in their original condition. For returns after 30 days, please reach out to us for assistance.

[{"id":45278449565885,"title":"Olive \/ 12","option1":"Olive","option2":"12","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908968472765,"product_id":8054198206653,"position":1,"created_at":"2025-08-01T18:29:11-07:00","updated_at":"2025-08-01T18:29:12-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Olive.webp?v=1754098152","variant_ids":[45278449565885,45278449598653,45278449631421]},"available":true,"name":"Rio's Rock Grinder - Olive \/ 12","public_title":"Olive \/ 12","options":["Olive","12"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279415107773,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Olive.webp?v=1754098152"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45278449598653,"title":"Olive \/ 14","option1":"Olive","option2":"14","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908968472765,"product_id":8054198206653,"position":1,"created_at":"2025-08-01T18:29:11-07:00","updated_at":"2025-08-01T18:29:12-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Olive.webp?v=1754098152","variant_ids":[45278449565885,45278449598653,45278449631421]},"available":true,"name":"Rio's Rock Grinder - Olive \/ 14","public_title":"Olive \/ 14","options":["Olive","14"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279415107773,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Olive.webp?v=1754098152"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45278449631421,"title":"Olive \/ 16","option1":"Olive","option2":"16","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908968472765,"product_id":8054198206653,"position":1,"created_at":"2025-08-01T18:29:11-07:00","updated_at":"2025-08-01T18:29:12-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Olive.webp?v=1754098152","variant_ids":[45278449565885,45278449598653,45278449631421]},"available":true,"name":"Rio's Rock Grinder - Olive \/ 16","public_title":"Olive \/ 16","options":["Olive","16"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279415107773,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Olive.webp?v=1754098152"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45278449664189,"title":"Chartreuse \/ 12","option1":"Chartreuse","option2":"12","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908972273853,"product_id":8054198206653,"position":4,"created_at":"2025-08-01T18:30:01-07:00","updated_at":"2025-08-01T18:30:03-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Chartreuse.webp?v=1754098203","variant_ids":[45278449664189,45278449696957,45278449729725]},"available":true,"name":"Rio's Rock Grinder - Chartreuse \/ 12","public_title":"Chartreuse \/ 12","options":["Chartreuse","12"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279417532605,"position":4,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Chartreuse.webp?v=1754098203"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45278449696957,"title":"Chartreuse \/ 14","option1":"Chartreuse","option2":"14","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908972273853,"product_id":8054198206653,"position":4,"created_at":"2025-08-01T18:30:01-07:00","updated_at":"2025-08-01T18:30:03-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Chartreuse.webp?v=1754098203","variant_ids":[45278449664189,45278449696957,45278449729725]},"available":true,"name":"Rio's Rock Grinder - Chartreuse \/ 14","public_title":"Chartreuse \/ 14","options":["Chartreuse","14"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279417532605,"position":4,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Chartreuse.webp?v=1754098203"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45278449729725,"title":"Chartreuse \/ 16","option1":"Chartreuse","option2":"16","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908972273853,"product_id":8054198206653,"position":4,"created_at":"2025-08-01T18:30:01-07:00","updated_at":"2025-08-01T18:30:03-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Chartreuse.webp?v=1754098203","variant_ids":[45278449664189,45278449696957,45278449729725]},"available":true,"name":"Rio's Rock Grinder - Chartreuse \/ 16","public_title":"Chartreuse \/ 16","options":["Chartreuse","16"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279417532605,"position":4,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Chartreuse.webp?v=1754098203"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45278449762493,"title":"Orange \/ 12","option1":"Orange","option2":"12","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908969980093,"product_id":8054198206653,"position":2,"created_at":"2025-08-01T18:29:37-07:00","updated_at":"2025-08-01T18:29:38-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Orange.webp?v=1754098178","variant_ids":[45278449762493,45278449795261,45278449828029]},"available":true,"name":"Rio's Rock Grinder - Orange \/ 12","public_title":"Orange \/ 12","options":["Orange","12"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279416156349,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Orange.webp?v=1754098178"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45278449795261,"title":"Orange \/ 14","option1":"Orange","option2":"14","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908969980093,"product_id":8054198206653,"position":2,"created_at":"2025-08-01T18:29:37-07:00","updated_at":"2025-08-01T18:29:38-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Orange.webp?v=1754098178","variant_ids":[45278449762493,45278449795261,45278449828029]},"available":true,"name":"Rio's Rock Grinder - Orange \/ 14","public_title":"Orange \/ 14","options":["Orange","14"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279416156349,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Orange.webp?v=1754098178"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45278449828029,"title":"Orange \/ 16","option1":"Orange","option2":"16","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908969980093,"product_id":8054198206653,"position":2,"created_at":"2025-08-01T18:29:37-07:00","updated_at":"2025-08-01T18:29:38-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Orange.webp?v=1754098178","variant_ids":[45278449762493,45278449795261,45278449828029]},"available":true,"name":"Rio's Rock Grinder - Orange \/ 16","public_title":"Orange \/ 16","options":["Orange","16"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279416156349,"position":2,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Orange.webp?v=1754098178"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45278449860797,"title":"Black \/ 12","option1":"Black","option2":"12","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908971585725,"product_id":8054198206653,"position":3,"created_at":"2025-08-01T18:29:50-07:00","updated_at":"2025-08-01T18:29:52-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Black.webp?v=1754098192","variant_ids":[45278449860797,45278449893565,45278449926333]},"available":true,"name":"Rio's Rock Grinder - Black \/ 12","public_title":"Black \/ 12","options":["Black","12"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279417008317,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Black.webp?v=1754098192"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45278449893565,"title":"Black \/ 14","option1":"Black","option2":"14","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908971585725,"product_id":8054198206653,"position":3,"created_at":"2025-08-01T18:29:50-07:00","updated_at":"2025-08-01T18:29:52-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Black.webp?v=1754098192","variant_ids":[45278449860797,45278449893565,45278449926333]},"available":true,"name":"Rio's Rock Grinder - Black \/ 14","public_title":"Black \/ 14","options":["Black","14"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279417008317,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Black.webp?v=1754098192"}},"requires_selling_plan":false,"selling_plan_allocations":[]},{"id":45278449926333,"title":"Black \/ 16","option1":"Black","option2":"16","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908971585725,"product_id":8054198206653,"position":3,"created_at":"2025-08-01T18:29:50-07:00","updated_at":"2025-08-01T18:29:52-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Black.webp?v=1754098192","variant_ids":[45278449860797,45278449893565,45278449926333]},"available":true,"name":"Rio's Rock Grinder - Black \/ 16","public_title":"Black \/ 16","options":["Black","16"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279417008317,"position":3,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Black.webp?v=1754098192"}},"requires_selling_plan":false,"selling_plan_allocations":[]}]

{"id":45278449565885,"title":"Olive \/ 12","option1":"Olive","option2":"12","option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":{"id":37908968472765,"product_id":8054198206653,"position":1,"created_at":"2025-08-01T18:29:11-07:00","updated_at":"2025-08-01T18:29:12-07:00","alt":null,"width":2640,"height":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Olive.webp?v=1754098152","variant_ids":[45278449565885,45278449598653,45278449631421]},"available":true,"name":"Rio's Rock Grinder - Olive \/ 12","public_title":"Olive \/ 12","options":["Olive","12"],"price":299,"weight":0,"compare_at_price":null,"inventory_management":"shopify","barcode":"","featured_media":{"alt":null,"id":29279415107773,"position":1,"preview_image":{"aspect_ratio":1.0,"height":2640,"width":2640,"src":"\/\/www.troutcreekoutfitters.com\/cdn\/shop\/files\/Flies_Freshwater_TungstenFlies_RIO_sRockGrinderTB_Olive.webp?v=1754098152"}},"requires_selling_plan":false,"selling_plan_allocations":[]}

Next: Rio's Morrish Sparkle Donkey

Back to Deep Water Point Fly Patterns

Next: Rio's Morrish Sparkle Donkey

You may also like

Rio's Rock Grinder