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Recommended SumoSprings And Timbren Jounce Springs For A 2021 Grand Design Reflection 337RLS  

Updated 04/23/2024 | Published 04/21/2024

Question:

I have a 2021 Grand Design 337RLS. It has 6000 axles. Can you tell me your Sumo Spring part number? Also does Timbren offer SES for my coach?

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Expert Reply:

Hi Ryan,

If your leaf springs sit on top of your axles then you'll need the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket # SS26MV. If your leaf springs sit below the axles then you'll need the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket # SS33HR.

Timbren does offer a few different options for leaf spring suspensions but you won't be able to use both the SumoSprings and Timbrens because they both mount in the same spot. If your leaf springs sit on top of the axles then you'll need the Timbren Trailer SES # T46GR and for leaf springs that sit under the axles you'll need part # T92MR instead.

Each kit is designed for one axle so you'll need to pick up two in order to do both axles of your Reflection.

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Kevin C
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Hands-On with the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket
Hands-On with the SumoSprings Trailer Helper Springs w/ Line Relocation Bracket - Video
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